Note to self: Don't try to steal anything that belongs to a man who makes a living from beating people with his fists. According to recent reports out of England, six genius would-be robbers should have put this on a post-it before attempting to nick the Range Rover of former two-time world champion boxer Amir Khan.

Amir and his brother Haroon—another practitioner of the sweet science who is due to turn professional in 2013—were returning to Khan's SUV when half a dozen men set upon them in an effort to steal the vehicle. One witness described what happened next to the Sun newspaper:

“These guys tried to jump Amir and his brother but they picked on the wrong blokes. They parked their car in front of the Range Rover. At least one had a cosh (bat). One slapped Amir and clipped him on the lip but Amir pulled back and knocked him out cold.

"Then five of them went for Amir and Haroon—but they stood their ground and these guys got dropped one by one. They left these men with cuts and bruises but all they were doing was defending their property.”

Though he can clearly handle himself on the street, Khan is going through a tough period inside the squared circle. The 25-year-old is coming off two consecutive losses and suffered a devastating knockout defeat in his last outing against Danny Garcia on July 14.

Khan, who has always had a questionable chin, cannot be faulted for his courage in the ring, but that courage and willingness to engage sometimes costs him when he fights heavy-handed punchers, as was the case with Garcia. 

Since that defeat, Khan has parted ways with trainer Freddie Roach, and he recently teamed up with new trainer Virgil Hunter, who has trained super middleweight champion Andre Ward since he was a boy. Khan is slated to fight (inside the ring this time) on December 15 against Carlos Molina in Los Angeles.

Here are some of Khan's greatest hits (pre-Garcia loss):