What do you feel when a guy cums in you?
Both the physical sensation and what you are thinking.
Sometimes, it's 'NOOOoooo... Not YET!'
...and sometimes, it's 'FINALLY!'
But usually, it's very gratifying and completely satisfying. It's the pinnacle of his pleasure, which I've given him. I love getting every last drop that he can pump inside me. It's what sex/mating is all about, after all! I love the feel of him pulsing inside me, pussy or mouth, passing something very intimate from inside him to inside me! It's a visceral catharsis, and feels wild and wonderful. Even if I haven't cum yet, I enjoy it!