(You dun goofed, son.)

A story of street justice out of Chicago today that makes Jon Jones’ bout of heroism seem like a boyscout helping an old lady across the street, claims that a “UFC champion” fended off an armed mugger and would-be carjacker on Friday.

According to various reports that originated from a police report of the incident that was released today, a 24-year-old career criminal got his just desserts when he pulled a gun on a seasoned MMA fighter and ordered him out of his vehicle after lightening his wallet.

Here’s the breakdown courtesy of MyFoxChicago:

Police say 24-year-old Anthony Miranda walked up to a car which was parked near 55th and Kenneth about 11:30 p.m. and asked the driver for a lighter.

When the driver said he didn’t have one, Miranda allegedly pulled a handgun, pointed it at the driver and demanded money. And even after getting some money, he ordered the driver out of the car, police News Affairs Officer John Mirabelli said.

At some point, Miranda’s attention was diverted and the victim was able to grab control of the gun and the two wrestled.

During the fight, Miranda accidentally discharged his gun, shooting himself in the ankle, Mirabelli said.

The victim — who told police he’s a martial arts expert and ultimate fighting champion — was able to pin Miranda down until police arrived. Police arrived to find Miranda with a face full of lacerations and two black eyes. He was taken to Holy Cross Hospital for treatment, police said.

Miranda, a convicted felon, is charged with armed robbery and aggravated discharge of a firearm, a Class X felony.

He was ordered held on $350,000 bond Sunday, according to the CooK County Sheriff’s office.

Records show he has several convictions, including at least one for a residential burglary. 

There’s a pretty good chance that the cops who wrote up the report may be confusing “MMA” with “Ultimate Fighting,” but just to be sure we contacted the management of the city’s only fighter who has worn UFC gold, Andrei Arlovski to ask if “The Pitbull” was the intended victim. As of the time of writing, we have not heard back from his agent.

Some other Chicago-based UFC veterans who could fit the bill include Stephan Bonnar, Miguel Torres, Shonie Carter, Danny Downes, Bart Palaszewski and Jeff Curran.