A British/English term for sweatpants or lounge pants.
Kaelyn: What did you buy at Victoria's secret?
Lucy: A new pair of trackie bums! They're purple and say PINK down the side! Ironic?
(N.)Cherry butt cheeks from sunburn
Sitting out in the sun today made me get a beach bum
Called such due the way the clothing material around a woman's vagina gets swallowed up by her flappy lips, creating what is often known simply as "camel-toe". An image reminiscent of a "scrum" in the game Rugby, where in trying to achieve control of the ball, both teams huddle into one small area, much in the same way the material around a woman's bearded oyster get's huddled into her beef curtains, creating the Front Bum Scrum.
"Hey, Sally! How's it goi.... woahhh..... nice front bum scrum you got going on there ;)"
"Oh my god, did you see Jenna at work today? She like, totally had a front bum scrum happening aaaaall day. Don't even try and tell me she didn't notice!"
someone who is particulay fat and/or retarded(not in the offensive way:)
aylas fat chubby sister is a lardo-bum
bUM bUM bE dUM bUM bUM bU dUM dUM
Rihanna: Bum Bum Be Dum Bum Bum Bu Dum Dum
A group of lads: Generally around 4-6 members of a group that find degenerate, sexist and outright narcissistic humour funnier than your nan's clit.
'See those losers over there'
'Yeah, they look like bum babies'
I ate too much chilli last night and spent all this morning giving birth to Bum Babies.