A guy buys a hot dog from a street vendor, and the vendor gives him a bag of peanuts for free. The guy opens the first shell and he hears, “Nice shirt.”  The guy looks around, but nobody is there.  He opens another shell and someone says, “Nice shoes.”  The guy looks around again and asks the vendor if he heard anything.  The vendor says, “Of course.  The peanuts are complimentary.”