I'm Gonna Cum On You - A funny and loud way to say you're about to go all out, usua

A funny and loud way to say you're about to go all out, usually because you're wasted, tired, or just really into someone.

I'm gonna cum on you, I just had a 3-hour nap.

I'm gonna cum on you, I just finished my 10th soda.

I'm gonna cum on you, I just saw a chicken wearing a hat.