Guidelines: Make sure you are about to cum, or do it while you are cumming, as she will probably resist this action and become very pissed and you'll want to get your nut off in time.
Also, remember to sit your lemon in a handy place.
This can also be done with a lime.
Guy 2, "Hahaha I heard she was a slut"
Guy 1, "I totally gave that bitch anal with a twist last night."
Guy 2, "Is that why your car has a busted window??"
Guy 1, "Totally worth it."