A fast food waitress from suburban Chicago has been charged with sexual assault on a man, who told police that the 25-year-old had forced him to have sex with her friend in the backseat of a car after offering him a ride.

Cierra Ross, a mother of two from Olympia Fields, was arrested Tuesday for her part in the alleged rape of a 33-year-old man July 26.

According to police, the victim was walking in the 400 block of North Kingsbury when Miss Ross pulled up next op him and offered him a lift home.

A short time later, the Denny’s waitress allegedly pulled a revolver on him, ordering him to climb into the backseat and take off his clothes.

Assistant Cook County State’s Attorney Amanda Pillsbury told The Chicago Sun-Times that Ross then forced the 33-year-old at gunpoint to have sex with her friend.

In the course of the encounter, the man was allegedly instructed to fondle the woman’s breasts and buttocks.

The two female suspects also allegedly robbed their victim, getting away with $200 in cash, credit cards and an iPhone. 

The unnamed man reportedly begged his assailants to stop, but was eventually able to escape from the car, running down the street naked from the waist down.

The 33-year-old spotted a taxi nearby and asked for the driver’s help. The Good Samaritan agreed to let him use his cell phone to snap a picture of Ross’ license plate and email it to himself.

The alleged victim later contacted police and identified Ross from a lineup. Her friend was not charged in connection to the rape.

Miss Ross, who also goes by the alias Octavia Brown, is being held on $75,000 bail. Her criminal record includes a number of misdemeanour prostitution charges.

•Credit (except amende headline); Daily Mail UK. Photo shows the accused, Cierra Ross.