Kristina Averbach of Boca Raton, Fla., faces a prostitution charge after she was arrested performing oral sex on a man — their position revealed by his car’s flashing brake lights.

A Florida stripper was busted for selling oral sex for $50 after the flashing brake lights of her john’s Mercedes gave the game away, police said.

Eagle-eyed cops in West Palm Beach spotted the flickering beams of the parked vehicle penetrating the night sky at 8 p.m. last Wednesday.

Approaching the car, they allegedly found a man sitting in the driver’s seat with his head back and eyes closed.

Mom-of-two Kristina Averbach, 38, was reportedly leaning over from the passenger seat and pleasuring him, reports the Orlando Sentinel.

Officers ordered them out of the car and the john claimed he’d met the 38-year-old at gentleman’s club Spearmint Rhino, where he agreed to pay her $50 for oral sex.

Averbach, from Boca Raton, denied any money was involved, but was arrested and charged with prostitution before being booked into Palm Beach County Jail on $750 bail.