I would say it is quite normal considering all men (especially ones on this site) seem to be obsessed with all things ass related. Just make sure that she is actually enjoying it and wants to continue with this activity. Try doing this with her pussy occasionally too.....
yeah its normal homie, id wonder about you if a girls ass didnt give you a woody. i get rocky bullwinkle all fired up just thinkin bout a nice ass that belongs to a (fairly) if not totally hot chick
Dont you notice how dogs and cats love to sniff and lick ass before they get some? I bet bugs even give rim. You never hear about that though because the damn government wont tell us about it. hahahha.
A rim job is where one partner teases the other person's asshole with their tongue. Licking ass.