"Request is for trolls having 'opposite parts'. I know it doesn't really make sense with all the references to bone bulges, but let's pretend that troll men have vaginas and troll ladies have cocks. I want to see a troll and and one of the kids hook up and have lots of "oh god wtf you're backwards" confusion and alarm. I don't really care which pairing it is, but there's a lot of them it could be hilarious/cute with (John/Karkat, Rose/Kanaya, Dave/Terezi, Jade/Tavros, etc.) If it ends up being a troll girl with a human guy, bonus points for pegging!"

You squirm your way between her thighs and suddenly her hand is braced against you, right below your belly button, like she's holding you at bay. "Dave," she says, and she's alarmingly likely to be serious when she uses your name, "let's do it the other way this time."