When you invert your ass cheeks into another's crack and start rubbing back and forth, making clapping sounds
Me Murray's ass cheeks clap when we are bum rubbing
A massive cyst on your bum that either bursts or is surgically removed leaving a crater on your bum.
Omg duuuude! My brother had the biggest bum bomb, seriously, it left a Grand Canyon sized crater down there!
The after effects of eating spicy food, particularly around the nether regions.
Eddie regretted adding the extra chilli to his dinner last night. He suffered from a wild, untamed bout of bhoona bum for days afterwards.
The act of drinking seamen out of a womans asshole after a man has ejaculated all of his goods into her.
Dayum gurllll! I just tasted the greatest bum milk from my lover Laquonda, I guess you can say I'm a lesbian and a fool for bum milk!
It's a poor person (bum), that takes (scabs) the last bit off the cigarette (butt) with a tiny bit of tobacco left in it that people usually drop on the ground once they are done with it.
''Ah man, got to work for the rest of the week and i'm broke as hell, i might have to be a butt bum for the week''
Typical Indian dude that is loud, drinks too much, speaks with Britney too often. and thinks he can play ball.
Man, look at the Bombay bums acting a fool again!