You would place the melon baller's opening over the ripe blemish, and push. If it was the right sort of acne, it would pop, shooting a white line onto the bathroom mirror. The pubescent body's version of silly string. I couldn't get it to work this way, unfortunately. But visualizing it was a 3D visual extravaganza.
I have no idea if that really was a zit popper, or if someone was playing a cruel joke, knowing a zit popper would keep me occupied through graduation. And if it was a zit popper, I wish I had it here right now. There is something growing under my nose, and I want to par-tay all over the nearest mirror.