Summary: Written for the prompt: I'd like to see the whole "Dean as a sextoy" thing, but with young Sam (maybe 13?) getting himself ready and then climbing into Dean's lap and sliding onto Dean's cock. He doesn't ride him because he's too inexperienced with sex, he just sits there with Dean's dick inside him for the short while that it takes Sam to jerk off. Then he climbs off sated and says thanks, leaving Dean extremely frustrated. This happens several times until Dean can't take it and he forgets his guilt and just fucks the hell out of Sam and Sam is completely overwhelmed by how good it is. in spnkink_meme .