Oberpuffy
The fart that sneaks up on you and takes your breath away without making a noise.
I had an Oberpuffy in the middle of a yoga class and the instructor said, 'That was like a silent earthquake.'
My mom let one rip while cooking and my dad just said, 'I think that was a new kind of smoke.'
During a test, my friend let out an Oberpuffy and I had to write the answer in tears.