Short for Pre-excretory Faecal Odour Syndrome, PEFOS is a form of flatulence, typically passed just before a bowel movement. It produces a particularly offensive odour, due to the proximity of the descending stool and the air pocket soon to be expelled as wind.
Please note: PEFOS is a parody “syndrome”, not recognised by the National Institute of Clinical Excellence.
Please note: PEFOS is a parody “syndrome”, not recognised by the National Institute of Clinical Excellence.
Karen: “I tell you what, earlier I went for a number two, and as I stooped down, I farted and it went right in my face and nearly knocked me out”
Becky: “That’s PEFOS for you.”
Karen: “Pee-what?”
Becky: “PEFOS. It’s short for Pre-excretory Faecal Odour Syndrome. Basically, it’s a really deadly fart that pops out just before you poop.”
Karen: “Ew. I always wondered why those types of fart smell so bad.”
Becky: “That’s PEFOS for you.”
Karen: “Pee-what?”
Becky: “PEFOS. It’s short for Pre-excretory Faecal Odour Syndrome. Basically, it’s a really deadly fart that pops out just before you poop.”
Karen: “Ew. I always wondered why those types of fart smell so bad.”
by XaneiFoxx May 25, 2020
1. an expression used when a peff is present and you want your group to leave.
or
2. to express that someone is being a peff.
or
2. to express that someone is being a peff.
by Jessica Kanter December 3, 2007