PEFOS

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.

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.”

pefo

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.

1. "Wow, he is so annoying! Pefo."

2. "Pefo."

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