corkin' your screws

verb: 1) joking or kidding, or 2) to screw someone.

1. Dave: Hey, Tim, look over there! It's Radiohead!
Tim: REALLY?! WHERE????
Dave: Nah, I'm just corkin' your screws.
Tim: Fuck you.

2. Sam: Hey where were Rachel and Ben last night?
Emily: She was corkin' his screws.
Sam: ...