West Texas Frac Job

A sexual act formed in the oilfields of West Texas.
When a man pumps water into a woman's vaginal cavity and proceeds to have sex with her.

Frac hand 1: Aye wassup bro. That chick last night gave me a West Texas Frac Job.
Frac hand 2: Yo bro you didn't seriously fuck that lot lizard right?
Frac hand 1: Fucked her how Haliburton fucks us!