Ronaldo

A guy who is shy at first, but turns out to be really cool. He is a good dresser and likes to wipe his hands in plastic bags.

guy 1: *cleans cheetos off hands with a plastic bag*

guy 2: don't be a Ronaldo

Ah ya fool

This is used when someone does or says something you think is stupid.

Jaquan: Hey dude, I'm skipping school on Wednesday to watch that new Power Rangers Movie.
Carle: Ah ya fool, don't skip school.