Bum 

The posterior. Habitat for Australian and English PM's where they live off bumsweat.

"The moisture that you see on the seat of your pants is bumsweat"

Bum by schteve April 1, 2003

bum 

to take code from a program and make it more efficient or compact while sacrificing readability thus making it more complex...

"i bummed 12 lines of code last night"

bum by yabber October 16, 2008

Bum 

Some one that is a 'Bum' is someone that ditches you for others also knows as SELL OUT.

"You coming boi" "nah man having a chiller" "you absolute BUM"

Bum by I Mozza I May 1, 2009

BUM 

Beast
Upper
Management

A nice way to personally and now urban Dictionarily define the word people keep calling you or you just know you are ^u^

Im BUM and I live in a box!

BUM by tardwoot January 25, 2011

Bum 

A bum is someone who has low common sense and always ask stupid questions that should even be asked

Bum: when is the test
Me: shut up you fucking bum

Bum by Mrjay3star October 20, 2014

Bum 

A hot/ attractive person

'You're bummmm'

Bum by Bicky y-w March 7, 2017

Bum 

Micheal. Michael is the definition of a bum.

Oh my god he just stayed in bed all day, what a bum.

Bum by missjacksonareyounasty June 16, 2017