Nehmen said:
I see horse_cock and multi_cock have been corrected to "penis" to fit the tag that's always been there, but what's up with the vagina still being tagged as "pussy"? That always bugged me.

The vagina is that fleshy tube on the inside, what we tag is the combination of vulva, clitoris, and (to a lesser degree) the mons veneris. As such using vagina would be flat out incorrect.