What you don't want to do is mess up especially under eextreme pressure to not fuck up.
EX: "Ethan don't fuck up " while trying to shave angry bear.
by donghammer January 13, 2015
The expression "Yo-Dudes" uses to scare 13-years-old "Yo-Dudes".
by Delf June 23, 2003
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"
by : P ya right May 3, 2006