Dirty Sigma 

When a chad turns on his own kind and invites them to a party, where he drugs them and rapes them till they ascend to the heavens only to suck up the ghosts with his skidding vacuum cleaner and rape their souls. When he is done, his cum will be forever green.

Evan became a dirty sigma and edged to roblox day care.

Dirty Sigma by EvanTheEdgeLord69420 December 19, 2023

dirty sigma 

To be a rude and bad “sigma” you must be in violation of some sort of order and considered a dirty sigma.

The term was invented by an 8th grader in Kentucky who called one a dirty sigma. The other term, muddy sigma is mainly used for pointing out unlawful conduct, in which was invented by the same person.

The words “Dirty sigma” can be traced back as far as 2021-2022 as a user on Reddit made a post about Dirty Sigmas lenses, in referral to the brand Sigma.

Dave is a dirty sigma for not being on time for class.

dirty sigma by greengalaxio January 7, 2024

dirty sigma 

every man who considers himself a sigma male. Instead, they are just a fucking loser.

"Look! Its a dirty sigma!"
"No, its a fucking loser."

dirty sigma by LilPetey May 13, 2024

Dirty Sigma Boy

The act of pulling down your pants and twerking while also having diarrhea, sending it all over the room and your dick and balls

“Whoa dude are you doing a dirty sigma boy??”

“Yeah my dick is covered in shit!!!”

Dirty Sigma Boy by Ntupid_Sigger December 7, 2024

Dirtysigmaniga 

When the starving African kid gets brain rotted.

I used to whip my Dirtysigmaniga.

Dirtysigmaniga by Joe Seff February 27, 2025