Ambiguous, open letter:

Dear X: Your attitude toward me today was "fairly crappy." If you have any kind of maturity, (not the pretend kewl-college-kid-internet-scrub type, but the real kind, where how-you-respond-to-others-affects-their-feelings) you'd have second thoughts about how you treat others.Contact me, if you have any thoughts on it. (I won't hold my breath)