Black hole vent

When your partner spreads their asscheeks revealing their dark gaping asshole as you light a cigarette, take a puff and put the ashes inside your partner’s asshole , after putting the ashes, your partner closes up their asshole like a vent, and you repeat the process until the cigarette is finished.

Chad: Dude, Stacy came over last night, she let me do a black hole vent on her, it was so hot.