What is Piss Fuck?
1.
When a guy sticks his penis in the girls ass or vagina and pisses while his penis is in there. It is said this is not pleasurable unless girlfriend is 100% horney or drunk.
"Susie, my boyfriend piss fucked me last night. and i hope he never does it again."
See
2.
An insult that has no meaning, that is used when the insultor cannot think of something to say.
"Tim...you...yousa piss fuck!!"