Team switch all the way! Headcanon- Cas has zero hang ups about sex and kinks. At first dean is a little freaked out when he finds everything from anal hooks to watersports in the search history but he soon gets on board as it becomes a bit of a game. They print out lists of kinks and try everything that isn’t a hard no for dean. Sometimes it’s a bust and they end up turned off and laughing (or in the hospital that one time) but overall it’s both the best sex and most fun Dean’s ever had.

Absolutely! 

I love the idea of Cas being interested in sex but with no hang-ups at all. It could actually be a really fun fic to read/write in which Dean and Cas go through a yes/no/maybe list and trying to figure out what really does it for them. 

Also, imagining the look on Dean’s face when Cas shows him some of the things he’s been researching. (It’s Dean’s turn to do the squinty head tilt because really, what the fuck is oviposition and do people actually make Jell-O eggs just for that?) 

And like, maybe the hospital visit is only coincidentally related. Maybe Dean trips on a dildo and sprains his ankle. (Poor Dean.) But it’s a good opportunity to try out that medical kink right? (Even if Cas is waaaay too into the role adn Dean is waay too eager to get on with it. Dean has to laugh because they both suck at role play.)