It happened -- ironically -- as Spears was leaving a Bev Hills medical building.
With one hand attempting to cover her freshly acquired Jolie-esque lips, Spears attempted to exit the parking lot in her Pumpkinmobile while using her other hand to steer. As she tried to make a quick left, with paparazzi by her side, Spears' tire ran over our sandal-wearing photog's foot. Spears stopped the car, trapping our guy for what must have seemed like 4 hours. Ouch!
Spears looked shocked once she realized what she'd done ... but didn't get out of the car to see if he was okay. Our photog went to the emergency room and fortunately, nothing was broken. But, in tire terms, it has not been a very Goodyear for our guy. It's rough out there!
Tune in tonight to TMZ TV to see how it all went down -- and Britney's reaction!