rock in your sock

When you're sat there jerkin and it just doesn't cum.

Demetrius: "Hey bro, you were in my bathroom for a while, the fuck were you doing in there?!"
Alejandro: "Sorry dude, I just sat there with a rock in my sock."
Demetrius: "Probably a good thing you had a rock in your sock since it's my fucking bathroom you bitch!"
Alejandro: "Nah man it's cool, I splooged in there last week!"

Rock em sock em

When you pour a gallon of lube in your partners anus then repeatedly use both fists to stretch it out

My partner said my head wasn’t big enough so we tried the ole rock em sock em