The bulk update request #2319 is pending approval.

remove alias jiggling_breasts (0) -> bouncing_breasts (31357)

Reason: Jiggling is not the same thing as bouncing as far as tags go, breast jiggle describes a different motion (minor wobbling of the breasts, post #2728869) than bouncing breasts (breasts very actively bouncing around/up and down, post #3102400) and the alias is only leading to regular mistags, with users likely entering "jiggling_breasts" to describe breast_jiggle, but having it alias to the more active bouncing_breasts

Additionally, "breast_jiggling" is already aliased to breast_jiggle, it makes no sense that the exact same words, but in reverse order, would be aliased to a different tag.

hungrymaple said:
Reason: Jiggling is not the same thing as bouncing, the tag breast jiggle describes a different motion than bouncing breasts

From reading the wikis, they're quite similar:

breast jiggle says:
Breast Jiggle describes slight wobbling motion of the breasts in reaction to other movements

bouncing breasts says:
When a character's breasts are bouncing up and down

post #3270371 has them bouncing up and down, but is also a slight wobbling motion. Is post #1311864 bouncing up and down, or slightly wobbling? I can see people very easily jumbling the two ideas, which could be why some started to get aliased together instead of randomly split across different tags.

watsit said:
From reading the wikis, they're quite similar:
post #3270371 has them bouncing up and down, but is also a slight wobbling motion. Is post #1311864 bouncing up and down, or slightly wobbling? I can see people very easily jumbling the two ideas, which could be why some started to get aliased together instead of randomly split across different tags.

The bouncing breasts wiki page is in need of a rewrite, it's essentially a stub, and doesn't differentiate between bouncing or jiggling or shaking motions.

"Bouncing breasts" should describe clear dramatic motion like post #3229425 or post #3204620 - in a still image, the breasts are changing shape, pointing in different directions, and there are copious amounts of motion lines or blurring to imply the breasts are moving wildly.

"Breast Jiggle" is a more subtle wobbling motion that, in still art, is usually only depicted by sparse motion lines around the character's breasts like post #2440946 or post #2077237 - there's no change in shape to the breasts or squishing into one another, it's clear these breasts are not moving with force or speed, and they more or less appear static outside of the motion lines.

Animation is an even better way to show the difference:

post #3157881 or post #3102400 are bouncing_breasts

post #2728869 or post #2639458 are breast_jiggle

I don't think there's any utility in merging the two tags, they're visually distinct motions, and jiggling tags already exist for several other body parts alongside "bouncing" tags for those same parts. The vast majority of mistagging probably comes from the aliasing, which in turn causes a snowball effect of people tagging subtle jiggling motions as "bouncing".

hungrymaple said:
The bouncing breasts wiki page is in need of a rewrite, it's essentially a stub, and doesn't differentiate between bouncing or jiggling or shaking motions.

"Bouncing breasts" should describe clear dramatic motion like post #3229425 or post #3204620 - in a still image, the breasts are changing shape, pointing in different directions, and there are copious amounts of motion lines or blurring to imply the breasts are moving wildly.

"Breast Jiggle" is a more subtle wobbling motion that, in still art, is usually only depicted by sparse motion lines around the character's breasts like post #2440946 or post #2077237 - there's no change in shape to the breasts or squishing into one another, it's clear these breasts are not moving with force or speed, and they more or less appear static outside of the motion lines.

That still leaves plenty of room for interpretation when it comes to still images. The breast jiggle wiki has post #3028965 as an example, yet the shape and amount of motion lines suggest more dramatic motion. post #1311864 is also used as an example, but given the shape and placement of the breasts with the character dancing around also suggests dramatic motion.

It doesn't help that the tag is often used for big/huge/hyper breasts, and I can't look at something like post #3256089 and not think there's some dramatic motion going on to move something that size (my brain just jumps to thinking about the mass and physics involved in their movement), even if the lines suggest only subtle movement.

hungrymaple said:
I don't think there's any utility in merging the two tags, they're visually distinct motions, and jiggling tags already exist for several other body parts alongside "bouncing" tags for those same parts. The vast majority of mistagging probably comes from the aliasing, which in turn causes a snowball effect of people tagging subtle jiggling motions as "bouncing".

I'd agree that it would be nice to distinguish between more subtle and more dramatic jiggling/bouncing. But I think it's a bit too subjective when it comes to still images. At the very least, the terms "jiggling" and "bouncing" aren't good at distinguishing them.

watsit said:
That still leaves plenty of room for interpretation when it comes to still images. The breast jiggle wiki has post #3028965 as an example, yet the shape and amount of motion lines suggest more dramatic motion.

That looks more like the character's upper body is moving as they walk, or they're sharply twisting at the waist into a pose, with their breasts swinging and jiggling in reaction to it. Whatever dramatic motion happening there doesn't appear like "bouncing" when the emphasis of the motion lines seems to be with the sideways swing of the upper body.

I can't look at something like post #3256089 and not think there's some dramatic motion going on to move something that size

They're faint motion lines that barely radiate out from the breasts, which - without the lines - would look entirely static, size shouldn't be a factor if we're operating purely off of visual information. It doesn't look dramatic to me.

Jiggling and bouncing are just the tags that already exist, and breast_jiggle could be more accurately described as subtle_breast_wobble, it's probably hard to come up with very specific tag names for different breast motions (or motions in general) that wouldn't be considered synonyms by someone.

hungrymaple said:
That looks more like the character's upper body is moving as they walk, or they're sharply twisting at the waist into a pose, with their breasts swinging and jiggling in reaction to it. Whatever dramatic motion happening there doesn't appear like "bouncing" when the emphasis of the motion lines seems to be with the sideways swing of the upper body.

Quite dramatically. They even draw attention to it with the dialog ("Am I overdoing this?") indicating non-subtle jiggling/bouncing. There are motion lines above and below the breasts too, suggesting vertical movement along with lines on the sides for swinging/side-to-side movement. That definitely isn't depicting "a more subtle wobbling motion".

hungrymaple said:
Jiggling and bouncing are just the tags that already exist, and breast_jiggle could be more accurately described as subtle_breast_wobble, it's probably hard to come up with very specific tag names for different breast motions (or motions in general) that wouldn't be considered synonyms by someone.

How about slight_breast_jiggle? That would better separate it from bouncing_breasts as being more slight motion (the word "bouncing" doesn't have to mean up-and-down only, bouncing side-to-side is also a thing; the bouncing_breasts wiki can be written to exclude that requirement).

watsit said:
Quite dramatically. They even draw attention to it with the dialog ("Am I overdoing this?") indicating non-subtle jiggling/bouncing. There are motion lines above and below the breasts too, suggesting vertical movement along with lines on the sides for swinging/side-to-side movement. That definitely isn't depicting "a more subtle wobbling motion".

How about slight_breast_jiggle? That would better separate it from bouncing_breasts as being more slight motion (the word "bouncing" doesn't have to mean up-and-down only, bouncing side-to-side is also a thing; the bouncing_breasts wiki can be written to exclude that requirement).

There are already four *_jiggle tags, three of which already implicate jiggling, it doesn't seem necessary to create a new tag with a clunky extra adjective instead of simply continuing to use breast_jiggle, which has been tagged on over 800 posts, has been in use for at least four years, and is fairly clear in its application, even if there are edge cases and inevitable crossover between bouncing and jiggling.

In any case, you're right that bouncing_breasts needs a rewrite to be clearer. To get back on topic (or at least restate the purpose behind the BUR), there's no good reason that jiggling_breasts should implicate bouncing_breasts when breasts_jiggling implicates breast_jiggle, they're just the same words in reverse.