Any one person that annoys or bothers you. Could be a certain male who has been transformed from a nice guy to a total jerk.
by Mary Ramsey May 9, 2007

by .katelyn January 2, 2010

Kristen, your such a buttmunch!
by Dani_teh_biggest_band_geek_ever May 11, 2007

like your younger sister (there all buttmunches)
by jrrj August 14, 2009

Someone who is acting like a jerk, dick, meanie, or asshole. But by calling them a buttmuncher you are saying it in a nicer way.
First Man: Will you buy me a soda, please?
Second Man: NO! Go buy it yourself!!
First Man: Fine you buttmuncher!
Second Man: NO! Go buy it yourself!!
First Man: Fine you buttmuncher!
by White Beezy January 25, 2008

Dude, he's a buttmunch!
by Beas T. Lee June 13, 2008
