Top definition
TO FUCKING MUNCH ON SOMEONES HUGE ANUS HOLE.
"Man, I wanna munch on someones huge butt anus hole" - Butt Munching
by Andrew and Owen August 17, 2008
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2
Using the internet excessively to the point of addiction 'I've been butt munching all day'.

Some who engages in excessive butt munching is a butt munch, and they device they use is often a giant butt munching machine (a phone or an ipod is just a butt muncher).
That little butt munch has been butt munching on his giant butt munching machine for 3 days straight.
by Jujulovesdudu May 05, 2013
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