don't fuck up
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.
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!"
"Waah!"
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"