Top Definition
is when u have ramdom out burst of ddoushe bag ness
otto ur being a butmunch
by latimer1234 September 13, 2009
the art munching bums
omg walsh what are you doing......wait dont tell me your butmunching!!!
by Joshua Priceington October 14, 2007
Is a person who is really annoying and abnouxious, slacking off to another person.
Say a person was really annoying to you and abnoxious won't leave you alone because they where slacking and goofing around touch to go hangout with friends and their the ButMunch.
by Random85 April 04, 2014
When someone with a big bum, swallows things in there bum.
(teacher with a big bum playing badminton)..
"OMG.. she's going to turn around and catch the shuttlecock with her bum!!, Now I know what they mean by butmunch!"

"omg, Shes short..Her bum must have ate her height"
by SKRM March 22, 2009
The act of munching man bum as demonstrated by Edd Head Bert
Egg head had a man give him a but munch
by BF June 15, 2006
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