The bulk update request #6055 is pending approval.
create implication bikini_bottom (7447) -> bottomwear (368411)
create implication bikini_bottom_aside (52) -> bikini_bottom (7447)
create implication bikini_bottom_down (54) -> bikini_bottom (7447)
create implication bikini_bottom_only (159) -> bikini_bottom (7447)
create implication bikini_bottom_only (159) -> topless (121616)
create implication bikini_bottom_pull (22) -> bikini_bottom (7447)
create implication holding_bikini_bottom (62) -> bikini_bottom (7447)
create implication holding_bikini_bottom (62) -> holding_clothing (4687)
create implication heart_ring_bikini_bottom (3) -> bikini_bottom (7447)
create implication heart_ring_bikini_bottom (3) -> heart_ring_bikini (0)
create implication heart_ring_bikini (0) -> heart_ring_swimwear (0)
create implication o-ring_bikini_bottom (139) -> bikini_bottom (7447)
create implication o-ring_bikini_bottom (139) -> o-ring_bikini (307)
create implication o-ring_bikini (307) -> o-ring_swimwear (292)
create implication square_ring_bikini_bottom (3) -> bikini_bottom (7447)
create implication square_ring_bikini_bottom (3) -> square_ring_bikini (8)
create implication square_ring_bikini (8) -> square_ring_swimwear (9)
Reason: There are currently hundreds of images tagged with white_bikini_bottom, o-ring_bikini_bottom, etc. which are all missing the bikini_bottom tag itself! It's fairly obvious that these tags are referring to a bikini bottom within the post. Other tag implications, such as "bikini_bottom -> bottomwear" should be self-explanatory as well.
I chose not to include bikini_bottom_removed, as the actual piece of clothing may not be visible. Examples include post #3541573, post #3017808 and post #2884174. Whether the tag is used correctly to begin with, and the validity of its existence, should be a topic of another discussion.
post #985708 is the only post to use the tag bead_bikini_bottom. Should the implication "bead_bikini_bottom -> bikini_bottom" be added?
I typed out a bunch of color implications, but there is a limit of 25 implications per BUR. I have created the following BURs as extensions of this one: BUR #6056, BUR #6057 and BUR #6058.
P.S. Somebody should probably make a similar BUR for bikini_top as well.
Lastly, some curiosities to potentially spark new threads:
1. heart_ring is not aliased to heart_ring_(hardware).
2. heart_ring_panties and heart_ring_bra don't imply anything.
3. "o-ring" has a hyphen while "heart_ring" does not.
Updated