nappy bum

Someone who has a large bum & in pants looks like they are wearing a nappy.
Equivelent to a females ghetto booty

look that at that boys bum in those jeans, now thats a nappy bum!

by hemmmm May 24, 2011

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Bum trumpet

A fart - but more specifically a particularly loud, long and smelly fart.

Ell: Jeez whats that noise.....oh bloody hell someone open a door what IS that?
Livy: it's just Isa playing the bum trumpet - chill dad!

by Lazyfatbitch December 30, 2016

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Standing in a corridor (at school/work etc) with your back against a wall and using your bum to push yourself away from the wall, and using it to cushion your return to the wall. Can be used to pass the time while waiting for a class to begin/person to arrive. Is closely related to bum walling.

1) Hey dude, you are so late. I've been wall bumming for the last five minutes.
2) I was wall bumming for so long i marked the wall.

by Steve September 2, 2005

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Get the wall bummingmug.

bums in seats

(also "butts in seats" and "butts in the seats"): spectators who have been drawn into a theatre or other entertainment by a low-brow, mass-appeal production. A reference to the economic demand on entertainment business producers to attract paid attendance.

"We need a show that will put bums in seats."

by Oscar Madison April 26, 2006

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