A boy that is incapable of moving his neck by choice, and in turn looks ridiculous when talking with others
Look at that guy, what a neckboy, someone should tell him he needs to move his neck like a normal person
by normalneck November 24, 2013
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A popular trick among high schoolers that allows one to slap the backside of someone's neck if he/she makes eye contact with the dreaded neckboi hand symbol.
Dude #1: Yo i think you dropped your pencil

*holds out hand in the neckboi configuration*

Dude#2: Oh thanks mah!

*looks down at dude #1's hand*

Dude #1: NECKBOI!!!!!

*slaps Dude #2's neck with monstrous force*
by Ncicco January 12, 2014
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A cynthis or teriti who are being annoying or kekekeing for no reason
"You look like your neck you neckboy" so then they all look in confusion knowing fiasco is the goat
by Fiasco94 May 10, 2019
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