My roommate took a piece of my pizza without asking. I would have offered him some, but it had bacon on it and he doesn't eat pork (or beef). Just kind of annoying that he'd eat something like that without asking, not knowing what was on it when he doesn't wanna eat certain things that are common on pizzas. He came up to my room and asked me what was on it, saying he'd spat it out and given the rest of the slice to his friend.
Thankfully I think there are three more slices left, and he did make up for it when he cooked for me later (unrelated to anything to do with the pizza)