Dennis Quaid's angry on-set outburst caught on camera -- but is it a joke?

Dennis Quaid was caught flying off the handle in front of cameras, but some believe the 61-year-old's outburst was staged.

"I am acting here, and this dickhead wanders onto my set," Quaid screams in the 40-second video that looks to be taken by cellphone cameras. "I can't even get a line out until Dopey the Dick starts whispering in your ear, and you're not even watching anymore."

VIDEO: Rihanna Pulls Off Epic April Fools Prank on Jimmy Kimmel

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.

On Monday, a Reddit commenter claimed the video is a bit for Jimmy Kimmel Live! sketch. While that has yet to be confirmed, it does seem likely.

Back in September 2013, Kimmel managed to pull one over on everyone when a "Twerking Fail" video hit the web and went viral. It as later revealed that JKL was behind the entire thing.

NEWS: April Fools'! The 14 Best Pranks of 2015

What do you think of Quaid's outburst? Is he for real?

Remember when Jennifer Aniston admitted to tasting the breast milk of Kimmel's wife? Check it out, below.