Flavor Flav -- Goes Nuts On Flight (Video)

Is Flavor Flav now a part-time flight attendant???

YEAHHHHH BOYYYYYYYYYYYY!!!!!!!!!

It all went down on a Southwest Airlines flight from Phoenix to Vegas on Saturday -- when Flav decided he didn't just want to be a passenger, he wanted to help out the flight crew.

Flav grabbed a bag of peanuts and pretzels (with the crew's blessing) and began handing them out to the stunned passengers.

At one point, Flav proclaimed, "Today the back of the plane is 1st class!!!!"

We're told everyone LOOOVED it -- and Flav took pics with everyone who wanted a shot.