Guy walks into a bar.
A guy walks into a bar, sits down and orders a drink.
As he's drinking, he hears a voice that says, "Hey, nice suit!"
He looks, thinking the voice came from behind him, but there's nobody else in the bar besides him and the bartender at the other end of the room.
So he shakes his head and takes another few sips of his drink. After a minute, he hears a voice say "Hey, great tie!"
He quickly whirls around, looks around, peeks over the bar, but still there's nobody there.
"Hey bartender, are you hearing voices?"
The bartender says, "You mean the friendly comments? Those are the beer nuts. They're complimentary."