is when u have ramdom out burst of ddoushe bag ness
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omg walsh what are you doing......wait dont tell me your butmunching!!!
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a word used to insult someone with no real meaning like dinkus or swashbucket
shutup Alanna, you butmuncher!
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A homosapien who consumes the gluteus maximus of human beings.
Krystal is a butmuncher because she was eating someones but.
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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.
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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"
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