You begin by strapping yourself to a rope with your back facing the ground. Your partner is looking right at you with their mouth open. You then begin to swing. Once you gained enough lift, you start shiting as you swing. Your goal is to aim for your partner's mouth, you would usually continue this until your partner's mouth is full of shit.
Yo I performed a bombing run on Veronica. Shit got all over her. I swear she was coughing shit all day.