Seriously, the MOUTH is used to:
eat;
drink;
bite;
cough;
hiccup;
smile/frown;
breath;
talk/yell/whisper;
whistle;
kiss;
spit;
stick tongue out;
sing;
vomit

While the asshole is used primarily as an EXIT to:
shit;
fart
In fact, I would say that the asshole is only in use for perhaps a minute per day for most people. It's used a LOT more than that by people using their asshole to get fucked! So, it's PRIMARY use for those people is for fucking.

Seems to me, that when someone goes to the trouble of getting their asshole nice and clean, lubed, and used as a port of entry for dildos, fingers, cocks, etc. it should have a nicer name than ASSHOLE.
Some I can think of are: mangina; manhole; boypussy; pussyhole; fuckhole; love canal; tunnel of love; port of call; port of entry
Which do you think is best? Do you have another term for it?