CYP is the acronym for "Calm your pussy!"
Mom: OMFG! you didn't do your homework!!!!!?!?!?
Child: CYP! MOM!
CYP is the acronym for "Classic You Problem".
Programmer 1: Dude, I can't get my code to compile. This shit won't work!
Programmer 2: Well what could it be? Have you included the right libraries?
Programmer 1: No wait, I fucking forgot to CLEAN.
Programmer 2: Sounds like a CYP to me.
Acronym for "calm your pants."
A variation is CYFP, or "calm your fucking pants."
You: Omfg, I just finished Twilight. Best. Book. Ever.
Me: CYP, nobody cares about Twilight.
You: AHHHHHHHHH!!!!!!!!!!! I LOVE TWILIGHT!
Me: CYFP YOU TURD.