Thats chop
Being stuipid or annoying etc
Nigga he's chop or thats chop foo.
Thats a chop
This is something you say to someone when they do or say something extremely stupid. If someone does or says something stupid you say "thats a chop" and karate chop the back of their neck. The strength of the chop depends on how stupid the words or actions of the person was.
Nick: "Totally did not do my homework last night. Yolo!"
Jon: "Thats a chop"
Jon: "Thats a chop"