breasts

Breasts are soft, prominent rounded growths that overlay the chest muscles, serving as mammary glands (tissue that produces milk). They are the most obvious secondary sexual characteristic of female (and intersex) characters. Breasts have had a complex relationship with social mores, aesthetics, femininity, and sexual attractiveness throughout history and including the modern day.

General guidelines

If breasts are present in a scene, they should be tagged regardless of whether the character is fully clothed or nude

If covered, in a non-sexual context, they should be rated Safe this includes images with subtle nipple outline, this is regardless of size.
Fully or partially exposed breasts (with the nipple/areola visible), or covered, with clearly defined nipple outline, should be tagged as Questionable, unless other elements within the scene prompt an Explicit rating
If a character's breasts are uncovered, use exposed breasts or one breast out as appropriate.

Breast Size
Do your best to include one of the size tags below, rather than only tagging "breasts"
Flat Chested
Small Breasts
Medium Breasts
Big Breasts
Huge Breasts
Hyper Breasts
Size Examples and Notes
For further details on each tag, see individual pages
_{Note that most of these tags cover a range of sizes, rather than a single set size, sample images will attempt to depict this range for each}
Flat Chested
post #2130640 post #2633330 post #2878383
A character with no breasts
Male/Andromorph characters should never be tagged as "flat chested"
Not to be confused with pecs or small breasts
A flat chested character should not be tagged with "breasts". If you think that a character should be tagged with "breasts", then you should probably use small breasts instead of flat chested.
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Small Breasts
post #503983 post #2640597 post #1902545 post #977747
Noticeably smaller than "average" breasts, often only suggested by lines or shading on the chest
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Medium Breasts
post #3028098 post #2912308 post #1378544 post #2017115
"Average" sized breasts, generally B or C bra cup
Often undertagged, only tagged with "breasts"
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Big Breasts
post #2636890 post #3055772 post #3065207 post #3137987
Noticeably larger than average breasts, fairly common and well within what's realistic
Smaller than, to equalling the size of, the character's head, starting at D bra cup size
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Huge Breasts
post #2844180 post #2985320 post #2642286 post #2502592
Breasts that go beyond "commonly large" big breasts, but mostly within the realm of possibility, with the largest/most exaggerated examples being believable with artistic license.
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Hyper Breasts
post #3144890 post #2756351 post #3782146 post #3149833
Breasts that are "absurdly large", usually disproportionately massive compared to the character, and sometimes even bigger than the character themselves.
Keep proportions in mind when tagging, huge breasted character with exaggerated or overweight bodies may mistakenly be mistagged as "hyper"

Tags About Breasts

Breast Appearance

General

Anatomy of the Breasts

nipples

areola

big areola

huge areola

montgomery glands ("Areola Bumps")
puffy areola

Characteristic Features

nipple tuft

Temporary States of the Breasts and Nipples

Substances on the Breasts

cum between breasts

Types of Breasts

Describing qualities of the breasts

Unusual/Non-Standard Breasts

Breasts in unusual number, positioning, feature, or are not standard human-like mammaries. Not all of these tags may actually feature breasts.

multi nipple

belly nipples

Miscellaneous Breast Tags

Comparisons and Measuring

breast size difference - two or more characters with varying sizes of breast within the same scene,
bust chart - a chart comparing the breast sizes of multiple characters, usually in cup sizes
comparing breasts - two or more characters comparing the breasts to one another, usually involves breast size difference
measuring breasts – using a measuring tape or scale to

Reactions to Breasts

breast envy - a character displaying envy over the attributes of another character's breasts (usually size)
breast awe - a character displaying amazement over and/or appreciation for the attributes of another character's breasts
describing breasts - a character talking about characteristics of their breasts, or another's breasts
looking at breasts

looking at own breasts

pointing at breasts

Other

Exposure and Views

How the breasts may be exposed and how they interact with clothing

cleavage

one breast out

nipple outline

These tags can apply to what part of the breasts are visible when a character is clothed or when the breasts are partially obscured

Breast Actions and Interaction Tags

Actions the Breasts Do "By Themselves"

Breast Physics - things breasts do in reaction to movement, gravity, or contact

breast jiggle - minor wobbling movements of breasts
breast drop - the breasts falling after being held up or within an item of clothing
bouncing breasts - breasts forcefully moving around
hanging breasts - breasts hanging off of the torso, when a character is bent over or on all fours
breast squish - breasts squished by clothing or by an object
breast rest - breasts resting on a surface
sloshing breasts - breasts making sloshing noises

"Passive" Interaction with Breasts

These tags describe a character posing in a certain way that causes them to interact with their own breasts

arm under breasts
arms crossed under breasts
covering breasts
pressing breasts together - this tag can also apply to more active interactions
hand above breast - A character has one hand resting on the top of one of their breasts.

hands above breasts - A character has both of their hands resting on the tops of both of their breasts.

"Active" Interaction with Breasts

These tags describe actions being done to breasts

breast grab - A character forcefully grabbing breast(s) with any appendage

guided breast grab

breast fondling
breast punch - striking a breast with a fist
breast squeeze - a character using an appendage to squeeze one or both breasts, not to be confused with breast squish
holding breast - A character holding a breast or both breasts with any appendage
pressing breasts together - a character pressing their own or another's breasts from the sides towards the middle
shaking breasts - a character moving their upper body, or pulling on clothing, to make their breasts sway, bounce and/or jiggle
sitting on breasts
standing on breasts

Things Making Contact With Breasts

Body Parts

Hands

hand on breast - A hand on a breast

hand on own breast - a character with their own hand on their own breast
hand on another's breasts - a character with a hand on another character's breasts
hands on own breasts - a character

hand above breast

hands above breasts

hand over breast
hands over breasts
hands under breasts

Head

boobhat - breasts resting on a character's head
head on breast / breast pillow - using breasts as a pillow to rest one's head on
face in breasts - a character facing into a breast or breasts

Other

breast frottage - Two character's breasts making contact

breasts on lap
balls on breast - a character's balls resting on or pressed against another character's breasts
butt to breast - a character's butt making contact with another's breasts, see also sitting on breasts
foot on breast - a character's foot on another's breasts, see also standing on breasts
penis on breast - a character's penis resting on or poking into another character's breasts