Florida Highway Patrol troopers responded to reports of a fight on the Florida Turnpike at the Port St. Lucie/Fort Pierce service plaza and found Colby Yandow, 23, and Kenneth Jackson, 35.
According to Jackson, Yandow hit him in the head with a golf club after they had an argument about pulling into the rest area.
Yandow, who told troopers she's "a trans-gender individual who has completed his sexual reassignment surgery, but has not updated his driver's license information to reflect such," claimed that she hit Jackson in self-defense after being punched in the face.
The suspects, both of whom smelled of booze, live together in Orlando.
"Mr. Jackson denied punching Mr. Yandow while he was driving, but admitted to punching him after being struck in the head with the golf club," according to the arrest affidavit.
Jackson was arrested on a battery charge and Yandow was arrested on charges that include aggravated battery.