Multiple tags about the act of kissing ass

It has come to my attention that there are two tags regarding ass kissing: ass_kiss and kissing_ass, the former with 12 posts and the latter with 2 posts.

I am of the opinion that kissing_ass should be the only tag used, but I figured this should be discussed first.

BUR #12797 has been approved by @nonamethanks.

create alias ass_kiss -> kissing_ass

Putting it in a BUR.

Is there any concern that kissing_ass might be confused with the expression kissing ass?
Maybe the tag should be kissing_another's_ass instead?

I don't think that's a concern for us, given that it's a small tag.

The bulk update request #12797 (forum #224142) has been approved by @nonamethanks.