What the worst pick up line you ever heard?

For me, I think it was when I was at my Sister reception and my creepy uncle is hitting on the bartender. If I could just remember what he said, it went a bit like this. "Damn girl, you're thicker than a bowl of oatmeal." I apologised for my uncle to the poor girl. ¬_¬; escorted him out the building till he sobered up some