LCM

Low Counting Muhphucka

Taken from "White Men Can't Jump.

I don't know why you asked him to help with your math, that LCM ain't gone help you.

BUM

In sports or just life Bum stands for....

Big Uncoordinated Muthaphucka.

Taken from the movie "Undisputed" but been in use long before that!!!!!!

See that guy on the basketball court, the tall one? He's a bum, no game at all!!!!