This means to cook meth. It is a reference to the show "breaking bad" where the star character, "walter white" said, "Cook jesse, cook!".
The act of being finished or ruined
“look what my barber did, I’m cooked.”
Basically means “I’m done for”.
His dick is so big, I’m cooked.
Your done for, or something will go wrong, typically in a relationship
“Your the only girl i trust opening up too” bro i’m cooked.
When you are hitting the gym too hard and you realize that everyone and everything around you is praying on your downfall
Damn you see Fern over there? Yesterday he was telling me “I’m cooked”.