Dennis Quaid was caught flying off the handle as camera phones rolled, but some believe the 61-year-old's temper tantrum was staged. <br /> <br />"I am acting here, and this dickhead wanders onto my set," Quaid screams in the 40-second video. "I can't even get a line out until Dopey the Dick starts whispering in your ear, and you're not even watching anymore." <br />The actor goes on to call his co-workers zombies and pu**ies in his profanity-laden outburst. "This is the most unprofessional set I have ever been on. This is horse s**t!" he says angrily.
