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What the sigma

Very common phrase used to express anger, contempt, disbelief or just to sound stupid.

Commonly used following the word "erm".
Teacher: "We're not on the computers today, get your pencils out!"
Brainrot pupil: "Erm, what the sigma!"
by Mr Johnstone June 13, 2024
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Hello, my friend. What is up with urbandictionary.com? I think its great!
Gangsta: Yo, G-dog. What the hizzle is up wizzle tha urbandictionizzle? It's mellow scrill yo!
White guy: WTF?
Urbandictionary.com: DEFINITION: Hello, my friend. What is up with urbandictionary.com? I think its great!
White guy: Oh.
by alyssa69gaming2011 June 11, 2023
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erm what the sigma

Erm what the sigma is a brain rot slang like Skibidi or rizz, it comes from a brain rot version of a clip of a reaction YouTuber going “um, what the heck” and later became a big meme
Person 1: Ayo what’s up my rizzler
Person 2: erm what the sigma, where’s my Skibidi slicers?
Person 1: so sigma my Skibidi
by CashMoney11 June 17, 2024
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What is that?!.

A 🏀 《basketball》.
by LeSouffleDeVersailles February 2, 2025
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What the sigma!

It has a similar meaning to "What the Hell" but is stupid brain rot.
Person 1: I got a 69% on my test

Person 2: What the sigma!
by maximiza1236 May 30, 2024
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