this particular definition for the word "neck" is commonly used among the youth when someone says, does, or thinks of
something stupid and therefore must be punished by slapping them
in the back of their necks'. however, you can trap someone into a neck if, and only if, you hold the circle, "OK", or
white power hand-sign just below your waist and the neck-ee happens to look at the hand-sign. there are two ways to avoid having to get necked by an unsuspecting predator, such as when you say "five-ten" before the neck-er necks you to dismiss the attack, or when you say "self-serve" before the attack giving you the ability neck yourself which will probably be gentler than what the neck-ee is capable of.
example one~
a: ``man i hope they clean up all that garbage in the
specific ocean.``
b: ``nigga did you just say `
specific ocean`? dassa neck``
a: ``FIVE-TEN!``
b: ``fuck, man. don't think i won't get on ur ass later though``