Squirt one off 

Squirting off a load, the completion point of masturbation

After watching a porno , Jon ducked into the bathroom to squirt one off.

Squirt one off by montyl January 21, 2010

Squirt one off in my ass 

It is a progression of using the phrase "fuck me" in a derogatory manor.

Party one: Dude, I just saw your car getting towed away.

Party two: Squirt one off in my ass! I can't afford to get it out of impound!

Squirt one off in my ass by Djbrad2100 June 28, 2017