When a construction worker farts really loud on a sheet of metal and the metal amplifies the sound

when you let out a fart very slowly to be able to hear every single clap that your bum makes

winding up the windows in the car to allow the passenger no respite from your noxious fumes

emitted whilst the posterior is seated on the sofa. The sound can be defined as a walrus being suffocated by a 20 year old "Easy Night" feather based pillow

sounds like an irrate driver who is late for work leaning on their horn

feels like a thousand monkeys are trying to tear up your colon (though how you might know this is anybody's guess)

fart so powerful it is capable of blowing away small animals or children.

as in "Who launched an air biscuit"

to lift one buttock in order to ease the quiet expulsion of gas

able to slice through silk like a hot knife through butter

done in the bathtub, accompanied by a blast of bubbles

Smell followed by sonic boom, for use only on Concorde

Don't even think about doing the Daz washing powder challenge after this one

... small, feminine and baffled by the gusset

You walk past a person, group, or crowd and silently fart, so they can smell it and think someone else did it. Basically, it is defined as farting while walking.