I used to be a bartender.
By far, best thing I ever saw, happened late one Friday night.
There was a woman standing at the bar drinking alone. A guy walked over. He seemed very friendly and tried to strike up a conversation. She was offish and rude to him so eventually he gave up. But, before turning to leave, he said "I may not be the best looking man in here, but I'm the only one talking to you."