Yo Man Don't Fuck Up 

The expression "Yo-Dudes" uses to scare 13-years-old "Yo-Dudes".

"Hey you man, don't fuck up!"
"Waah!"

Yo Man Don't Fuck Up by Delf June 23, 2003

Yo Man Don't Fuck Up 

Your tellin ya boy not to mess like with the ladies or on a job interview

"Yo Man Don't Fuck Up that girl is fine"

Yo Man Don't Fuck Up by : P ya right May 15, 2006