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3. Bum chunder
A drinking forfeit where person 1 bends over and pulls down their trousers. Person 2 lies underneath, and drinks a pint of lager which has been poured skillfully through person 1's bum crack. Person 2 has to drink the lager as it dribbles off the testicles of person 1.
Give him a bum chunder!
by woody Mar 4, 2005 add a video
1. bum chunder
a rapid and violent excretion as as a result of drinking in excess .

often described as a hangover shit : picture your bum throwing up .

essentially a nightmare for shared toilets .
-"i just saw Commi running down the corridor with a look of sheer panic on her face".

-"too right , she went out last night, that'll be the first BUM CHUNDER of today . lets hope she makes it to the loos" .
2. bum chunder
A projectile explosion from the arse of a lumpy nature.
I've just done a bum chunder in my pants!
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