A customer throws money on the counter and doesn't look at me. My first thoughts:"Pick it up and hand it to me. Toss it to me like a dog again and I'll break your little ****ing hand."
Waiting upon giggly teenage girls. First thoughts "I don't have any general hatred towards you, but I wonder if I suddenly socked you one in the face and we both felt the breaking of wet cartilage under my fist. Would you take something serious for once in your life? Would you still find everything funny?
I don't actually say or *do* these things. Sometimes though I'm taken aback that I think them at all however. Bottom line. I'm just not a people person. I can fake it for a while, but no. I'm too cold and easily frustrated by the human race.