Tightrope

                                      
     A guy goes into a bar. He's sitting on the stool, enjoying his drink when
    he hears, "You look great!" He looks around - there's nobody near him. He
    hears the voice again, "No really, you look terrific."
    
    The guy looks around again. Nobody. He hears, "Is that a new shirt or
    something? Because you are absolutely glowing!" He then realizes that the
    voice is coming from a dish of nuts on the bar.
    
    "Hey," the guy calls to the bartender, "What's with the nuts?"
    
    "Oh," the bartender answers, "They're complimentary."