Briefly
popular in the early-to-
mid 1990's, mostly in inner-city circles & the hip hop community:
When someone says or does something stupid/wrong, a friend
will point it out by yelling "CHOP!" while imitating a karate chop to that person's neck.
(1993)Snucka #1: Yo, I'ma get me a
Lexus convertible!
Snucka #2:
Lexus doesn't make a convertible, "CHOP"! (proceed to karate chop #1's neck)