The (sometimes fatal) rush of hot, noxious gas that escapes from between your legs after farting whilst sitting on the porcelain throne.
This is particularly hazardous when hung over after a night on the Guinness, as the unsuspecting victim hangs their head in shame between their knees, whilst the world falls out of their arse, and a gust of rusty wind has nowhere else to go but to escape up and out from between their legs right into their face.
âOh Sweet Baby Jesus and the orphans!â
âWhatâs wrong, Darling? Are you ok?â
âFor Fuckâs sake! Iâm sitting on the pot to have a Richard the Third and let out a huge fart. The backdraft shot right up and hit me in the face. I wish I hadnât eaten that vindaloo last night.â
âOh dear. You poor thing. Do you need me to come in and help you?â
âNo thanks Mummy, Iâll be fine.â
Mug up is the phrase shouted by an English Pornographer moments before the lead actor reaches Billy Mill Roundabout, this ensuring the actor(s)/actress(es) arecorrectly positioned to catch the âMoney Shotâ on their Boat Race.
Sometimes, should the budget of the skin flick allow it, there will be a special role dedicated to this task. That person is known as Sarson, as they are specifically watching for the Vinegar Strokes.
Mug Up Jeremy, Quentinâs just reached his Vinegar Strokes.