to express discontent and irritation by exaggerated emotions such as shouting, flailing of body parts, or use of disrespectful remarks. (Sometimes used as a phrase "japping out")
My motherjapped out when I arrived home extremely late from a party.
The act of constantly discussing one's life with regard to college applications often in a passively competitivenature with one's peers.
Guy: "Yeah man, I collected about three hours, of community service yesterday, I just hope I can keep up my top 5% class rank with all of my extracurriculars. What about you? What did you get on your SAT again?"
Guy #2: "No one cares about your college shit bro. Stop japping off.""