farts-in-a-box 

Kind of like a child’s jack-in-the-box but with a noxious fart-cloud released instead.

The festive looking farts-in-a-box musical device was cranked with glee until the boy realized what the “Pop Goes the Weasel” tune would finally mean.

farts-in-a-box by Dr Bunnygirl January 12, 2019

fudge in a fart box 

An exclamatory statement: A quick and disgusting way to remind everyone That a bowl movement is inevitable. Also used to describe situations that share thematically and emotively the same concept.

"Oh, fudge in a fart box! I fumbled my keys and they dropped down through the sewer grate!"

fudge in a fart box by In the gutter, as usual December 10, 2016