frank job 

When you stick your dick into another persons armpit and you perform the farting motion noise you would make until the guy cums

Man, Jenna gave me a great frank job last night! I came all in her armpit!

frank job by Themofo July 24, 2014

Frack Job 

A sexual position in which the man "drills" the woman in her asshole, which leads to her releasing her "natural gases.
Can be enhanced by wearing a hard hat and orange vest and yelling "Give me your gas!".

"Hey,you want to give me a frack job?"
"Sure, just let me get my hard hat."

Frack Job by theattorney January 7, 2021