How bashful!

Brad Pitt grabbed dinner with director David Fincher at Giorgio Baldi in Santa Monica last night, and we guess the actor didn't want to give us a peek at the scrape on his face, because he quickly jumped into his awaiting ride after dinner.

"This is what happens when you try to run up steps in the dark, with your arms full, wearing flip-flops. Turns out if you then try to stop your forward momentum with your face, the result is road rash," he told People about his injury at the Autism Speaks event.

We're inclined to believe him, but a new report from In Touch claims his boo boo could be the result of "Angie's wrath" after he told her about getting naked with another woman prior to their August 23 wedding. "Brad casually told Angelina he was naked and shared joints with some friends in the hot tub, as if it was no big deal. Angie couldn't believe her ears. She still has a lot of wild child in her, but she's very territorial and jealous when it comes to Brad and other women," a source dished to the mag.

So was it flip flops or Angie's fist?! Guess we may never find out!