Ordered a drink last night, server did the old, "My name is blah blah, just holler if you need anything." I said, "thanks, blah blah." He then apparently made to shake my hand, but my head was turned. I saw a look of horror on my gf's face, and when he lowered his hand and walked away, she filled me in on my crime. Embarrassing, but probably even more embarrassing for himself.