The Miz -- When It Comes To Bein' Gassy ... Big Show's The King (VIDEO)

The Miz just spilled the beans ... revealing which WWE Superstar can unload like none other when you're talking passin' gas.

Miz appears on this week's episode of Matt Weiss and Theo Von's "Allegedly" podcast and is asked if a wrestler's ever had an "accident" in the ring. The question unleashes a pretty interesting convo ... and it's no surprise Miz says The Big Show, who weighs in at 500 lbs and stands almost 7 feet tall breaks the worst wind.

Miz also dishes on some of the biggest WWE fans in Hollywood ... the answer may surprise you.

You can download the full episode here on December 29.