An Airborne Ranger goes into a bar. He's sitting on the stool, enjoying his drink when he hears, "You look great in that uniform!" He looks around - there's nobody near him. He hears the voice again, "No really, you look terrific with your spit-shined boots and beret."
The guy looks around again. Nobody. He hears, "Is that a new beret color or something? Because you are definitely distinctive!" He then realizes that the voice is coming from a dish of nuts on the bar.
"Hey," the Ranger calls to the bartender, "What's with the nuts?"
"Oh," the bartender answers, "They're complimentary."