The act of taking someone's cell phone and placing it between the crack of your ass. This causes ass sweat to transfer onto the cell phone so when it is in use the next time it smells like ass. Depending on the severity you may or may not fart while the phone is in you ass crack, this will intensify the smell.
I took my girlfreinds phone and put it in my ass crack and farted on it, (stinkcell). Because she was texting in bed and was keeping me awake. This also works when you are annoyed by someone talking on thier cell phone in a car and or elevator.