I'm sorry, I know it's not funny, but I did have to laugh at the absurdity of a doc telling a teen that and of course a teenager would have to try it. There's no way I could willingly hit it hard enough to pop it.
It totally cracks me up in retrospect, my friends and I in the lunchroom in high school, a big old history text book, WHAM "did it pop" no... lets try again. God were were so stupid!! LOL