A man walked into a bar, sat down, and ordered a beer. As he sipped the beer, he heard a soothing voice say, "Nice tie."
Looking around, he noticed that the bar was empty, except for himself and the bartender at the end of the bar.
A few sips later, the voice said, "Beautiful shirt."
At this, the man called the bartender over. "Hey, I must be losing my mind," he told the bartender. "I keep hearing these voices saying nice things, and there's not a soul in here but us."
"It's the peanuts," answered the bartender.
"Say what?" replied the man in disbelief.
"You heard me," said the barkeep. "It's the peanuts... they're complimentary."