Mucky bum

Mucky bum is the result of passing copious amounts of excrement and having it stick to unusually long anal hair.

I have a bit of a mucky bum this morning dude.

Broken British bumming

When a group of British men bum you til you break.

Bumped into those British blokes last night, they gave me a proper broken British bumming

Up ya bum with a rubber thumb

Rhyming Slang

Like up ya nose with a rubber hose

Hey Suzie up ya bum with a rubber thumb

bum fuck a nigga

Something that someone says while they are fried. Particularly white people say this. These people tend to act like retards as well

Bum fuck a nigga! Bum fuck a nigga!

bum blazer

A huge, flaming homosexual, one who blazes bums.

Hey, check out those bum blazers over there!

Damn, they blazin' it hard.

Bum-bum

1. An informal term for the buttocks.
2. Bum-bum hole can also be a term for the anus

1. While riding on the Amtrak keystone train to nyc on the metroliner cab car ( or amfleet cab car) #9645. I saw this lady with a crop top and a very tight pum pum shorts and with a huge, sexy and firm buttocks, many guys onboard the train & the conductor was flirting around her, and I was about to slap that sexy bum-bum but she had a guy (an ugly guy) sitting next to her so I didn’t :(

2. Ugh, I have sand inside of my bum-bum hole from the beach

bum bum

The ultimate comeback if you are losing and argument.

*in mind* ah shit im losing. "bum bum"