Even worse for me is when someone says "You have to" in a non-emergency. I feel like replying, "Excuse me, the only thing I *have* to do is pay taxes and bills. Other than that, I don't *have* to do anything I d--n well don't feel like doing!"
Oh I so agree! (pod!) One time I was at the rink practicing my sit spin and one of the girls I skate with, who is about eleven, was watching me. She had just learned it herself, and was kind of hung up on technique, so she said, "Is that the way you do that? You HAVE TO put your leg this way..." and I said (cheerfully), "I don't HAVE to do anything except pay taxes and die!" She stared at me for a second and then burst out laughing. Now sometimes she asks me to "say that again!"
(Of course, this is the same kid that when asked why she was wearing a tank top, and wasn't she cold, said, "No, I'm a HOT-BLOODED WOMAN!!!" I'm still laughing over that one!)