One that is fixated on the anus and will do anything to smell it, love it, and lick it.
That butt lover sure is a nuisance in the boys locker room.
by Andrew Norris July 17, 2005
A fan of the posterior, can also be written butt-lover
I am a buttlover par excellence; you can't beat a nice piece of arse.
by Edna Sweetlove October 01, 2006