Definitions by Ncicco

Neckboi 

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*

Neckboi by Ncicco January 11, 2014