What is it?

Before my daughter went off to college, she took a martial arts self defense course. Every Sat for almost a year I was her punching/kicking bag.

Back in the early 80's, I decided to learn Kenpo. My sensei was the ex-husband of my live-in girlfriend.
Guess who got to assist with EVERY demonstration that year?
Not only was he (still is) a third-degree black belt, he had 2 inches of height and 25 lbs on me.
 
LOL. I got twanged in the testies at work one day rolling up my fish tape lol. It brought me to my knees. lol. Of course my boss at the time was walking through and saw it. He just smiled and said "Hurts...Don't it" lol