When your friend goes to the bathroom, and you start hitting on the girl he was with.
Dude, Ryan just went to take a dump. Watch the door while I pull a Poop 'N Scoop?
When your roommate or friend sneaks up on you while your sleeping and gets you to orgasm through rectal insertion without you waking up.
Aw man my roommate gave me the ol' Scottdale Poop n' Scoop last night and I've never woken up more refreshed.