She's a police officer in Elizabethton, Tenn.
Authorities report a drunken driving suspect mistook Officer Ellison for a Sonic waitress.
A caller to 911 reported a woman driving a car nearly hit several other cars before pulling into the Sonic parking lot.
The Johnson City Press reports the DUI suspect handed the officer a $20 bill -- but didn't get fries with her order.
Police say officers also found drug paraphernalia and many bottles of prescription medicine in the car.
Suspect Veletta Newman is due in court in April for a hearing.