The bulk update request #10068 is pending approval.

create implication anus_behind_g-string (63) -> anus_peek (926)
create implication anus_behind_g-string (63) -> g-string (1834)
create implication anus_behind_thong (201) -> anus_peek (926)
create implication anus_behind_thong (201) -> thong (41329)
create implication anus_peek (926) -> anus (612795)
create implication pussy_peek (1050) -> pussy (74)
create implication panty_peek (680) -> panties (172213)

Reason: These are pretty straightforward, even if these things are only partially visible they should still be tagged. Also, the two anus_behind_* tags clearly fit within the definition of anus_peek. I've left out penis_peek and sheath_peek since the former is essentially a disambiguation tag judging by it's wiki and the latter should probably be aliased to penis_tip, but I'll leave that for a separate BUR.