Sloppy Stop
When you're getting or giving sloppy head on the side of the road and a cop pulls over to what you're doing on the side of the road. Stopping your blowjob.
Person 1: Last night I was getting sloppy head and a cop ruined it by pulling up and interrupting the whole situation.
Person 2: That's a sloppy stop!
Person 2: That's a sloppy stop!