Used to disagree / deny an allegation or statement made against you.
Sarah: I swear down Tyrone i saw Becky on you factetime recents!
Tyrone: Necky! She’s not! Check my phone den
Common replacement for someone being a 'pain in the neck'
Ken: Aw man Matt is being a right necki this morning he keeps acting like a dick
The act of beating the shit out of some one when you get a neck on them
damn bro he got NECKY NECK!!!!!!!!!!!
Neckie or Necky - shortened version of “neckerchief” worn by boy scouts
The scout master tied his neckie around his cock so he could stay hard when he fucked the scout.