With all of the buckets stuff and the way Alternia was, I imagine that masturbation is something that was WAY not allowed because it was seen as like,,, wasting genetic material so to most trolls it would be unthinkable. So it makes me think abt the trolls on Earth C (meaning Kanaya, Karkat, Terezi, (Sollux and Aradia I guess??)) learning that masturbation is ok and it's not a selfish or wasteful thing to do. Like with Rosemary, Rose guiding Kanaya showing her that its ok to touch herself and then just watching her once she really gets into it,, her whole fist up her nook and her hand squeezing her bulge hard and she cums super hard,, and then after Rose kisses up her whole body and takes her to the bath to clean up and praises her for how well she did. w davekat (and i think I saw this in a karkat/karkat fic or something but I don't remember how much) I think it would start w Karkat looking in the mirror masturbating and pretending it's one of his other selves,, and he is so ashamed that he was masturbating and fantasising about "other people" (himself) that he convinces himself that he just basically cheated on Dave by doing that,,, so he talks to Dave about it and is having a hard time getting the words out but once he finally says what he's trying to say Dave is like "youre... apologising for masturbating??????" and and and ummmmmm idk I forgot but yeah