Justin Bieber Sued for MMA Moves on Paparazzo

Little Justin Bieber has been sued by a photographer who claims the singer delivered a crushing MMA-type kick to his abdomen, after a perfectly lovely date with then-GF Selena Gomez.

Jose Osmin Hernandez Duran claims when he was shooting the then-couple at The Commons in Calabasas last year ... Justin was trying to maneuver his brand spanking new Mercedes out of the parking lot. The suit alleges Justin became frustrated at the photogs, jumped out of the car and "delivered a martial arts-type kick ... in the lower rib cage on the left side of his abdomen."

But the suit alleges the attack continued, when Justin used his left fist to punch the photog on the right side of his face. Justin allegedly then pushed the photog against a parked car. The suit claims Selena actually returned to the scene a few minutes later to look for her cell phone and apologized for Justin.

The lawsuit is interesting ... citing a litany of alleged misdeeds committed by JB, including assaulting a former bodyguard, bullying a woman, driving at reckless speeds in his gated community, stealing a pap's SIM card and threatening to kill a neighbor.

The photog doesn't give a specific amount he wants for the alleged assault and battery.