"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!"