Two people who are inseparable, they are always seen together.
Dan and Joe are such BumChum's they are always together!!
by Nat-Man April 12, 2007
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(putative) homosexual anal sex partner (mildly derogatory)
Look, there goes John with his bumchum.
by lord british October 19, 2003
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If you are bumchums with someone it does not always mean you both take part in anal love making. It also means you are really good friends. Comes from the word bumming or to bum . If you bum something then you really like it. E.g "I'm really bumming this new track!!" So a bumchum is someone you get along with really well and really like.
Person 1: "Hey Bumchum!!"
Person 2: "Haha Hey!"
Person 1: "What you been up to?"
Person 2: "Nothing Much"
Person 1: "Wow I love that new top!"
Person 2: "Thanks I'm liking your new haircut!"
Person 1: "Wanna come over my house after school?"
Person 2: "Sure!"
Person 3: "Stop bumming each other!!"
by Dan.R March 7, 2006
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when someone is over friendly to someone and doesnt leave them the fuck alone ever and is constantly around them and being nice to them despite how they're treated by them
fletcher proceeds to follow bradley around 24/7

fletcher "hey bradley what shall i buy you"
Bradley "Everything"
Fletcher Gosbee "Ok bradley!"
Bradley 'Takes things'
'From a distance Mac says'
Mac: "Fletcher bumchums bradley so much"
Fletcher: Follows him around 24/7 and doesnt leave him alone (Basically wants anal)
by danyall November 14, 2017
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a man that has a gay lover and have sex up the shitter.
ewwww also known as Daniel Gale. Jamie Harris
hey bumchums stop fukkin up the arse!!!!!!
by louise April 11, 2004
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My 2 tomcats. One's a puff, one's bi. Yeh, I have issues with my sexuality.
my cats are bumchums
by bumchums' mother June 27, 2004
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