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verb: to make someone sitting in the back seat uncomfortably cold, by rolling down the front windows of the car. The perpetrator is usually a drunk fat-ass, and an inconsiderate boor, who is not interested in the comfort of fellow passengers. They can be easily identified by their robust neck meat. While the fatnecker is only interested in his own comfort, the person being fatnecked is usually too shy to ask the fatnecker to roll up his window, because the fatnecker is usually an older, burly, high school senior, and the victim, a skinny, waifish, freshman, who will have to earn the respect of his peers before dictating the climate of the vehicle..
"Man, that asshole fatnecked me all the way to Memphis last night. While he was in the front seat, sweating, and being loud and drunk, I was in the back seat, shivering, and too timid to ask him if he could roll up his window."
fatneck by Horace Blumpkin May 13, 2010
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a human with an excessively large or fat neck. a person with double chins & then more fat to add with that fat.
Wait until he moves his lard fatneck out of the way.
fatneck by squirtmouth October 29, 2015
someone with a fatneck? self explanitory...fatnecks may dress uup as queefs for halloween.
look. its your m0ther. what a fatneck
fatneck by You_Fking_Wish. December 21, 2003
Someone who has a neck like a rolled up duvet.
Even wearing a rosary the fatneck looked like she was being strangled by a piece of elastic.
fatneck by Lotty July 6, 2015
A person with (one or all these) a lumpy, double chin, extra skin, or a lot of fat on their neck.
Did you see Mrs. Harrison? that Fatneck bitch looks uglier than a warthog!
Fatneck by Lizard Person August 17, 2022
ksi is a fatneek
fatneek by Bzjzbdhdjsbsja January 23, 2020
welcome to all kids coming from KSI’s reddit videos.

A fatneek is used to describe someone that gains an astronomical amount of weight but denies it everytime someone tells him
Someone: Hey you fatneek
KSI: aye yo thats mad
fatneek by seepah September 25, 2020
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