Getting a handjob while wearing a condom
Dave: "Mate, how was last night?"
Mark: "Oh yeh it was amazing. Got me a con-job."
When you get so fucked up at a concert that you get a hand job in the crowd.
"yo dude, datsik was so dope!"
"yeah man, did you hear that con-don got a con-job. he was so fucked up!"
"what?! that lucky son of a bitch!"