Investigators said Jason Gross, 32, of Gastonia, was a passenger in a minivan going through the Bojangles drive-through lane May 16 when the female driver ordered a chicken-leg dinner, the Gaston Gazette, Gastonia, reported Monday.
Employee Jaqueline Green said Gross became enraged when she told them the restaurant was out of chicken legs and shouted at her with profanity before declaring he had a "leg for you" and exposing his genitals.
"He did it gradually," Green said. "It's going to be forever ingrained in my head."
Green and the restaurant's manager took down the license plate number of the minivan.
Gross turned himself in to police at about 1:30 a.m. Saturday and was released on an unsecured bond.