MeganFox081708_04_X17.jpgBrian Austin Green MeganFox081708_03_X17.jpgIt can't be easy being a super-mega-international star like Brian Austin Green, of 90210 (the O.G. version).

While waiting for his car at the Century City mall with fiancee Megan Fox, a buffed-up Brian became incensed at having his picture taking (because it happens so often, right?) and even went so far as to take a swing at a photog, who was standing on a public street, hitting a camera out of his hands.

While Megan hid behind a wall, Brian continued to get even more agitated, stalking back and forth throughout the valet area.

Could it be he was so pissed because there's trouble between him and his now more famous fiancee (who were rumored to have broken up)?