fart marble 

a fart produced under squeezed conditions, such as inside pantyhose, that is held in momentarily and produces a feeling of having passed a marble.

I was squished into the tiny airline seat and wearing those 'slimming' pantyhose when I popped a fart marble.

fart marble by Gobi December 1, 2005

Fart Marble 

When a fart takes the high way to the cooch

"I thought I was gonna fart but it just turned out to be a fart marble."

Fart Marble by MyNameIsPathfinder September 17, 2019

Fart marble 

Fart marble: noun; a fart that has been released by a male while wearing women’s panty hose. That fart is now a compressed ball of methane. It’s progress can be easily tracked as it moves about the panty hose, trapped by the waistband.

Todd come out from under the fucking table, so we can see the fart marble bouncing around. Carol is headed for the legion and needs her panty hose back.

Fart marble by Bigbrothathunda!!! June 25, 2019