I had no idea what sack tapping was either until I read this article :

As they say, “Boys will be boys.”

After taking a glance at Google trends, we noticed an odd standout for the No. 1 spot of hot searches: sack tapping. And yes, it’s exactly what you think it is.

Sack tapping is the latest dangerous craze to hit schools. The object of the game is to punch (or slap, flick or actually tap) a boy in the groin to see who can handle the most pain. It doesn’t sound like there can be a clear winner here in this “game.” And sadly, there isn’t.

In Crosby, Minn. the story of 14-year-old David Gibbons is hopefully scaring straight teens who thinks sack tapping is an Olympic-worthy sport. Gibbons was walking in between classes at school when he was punched in the groin by a classmate. He had to have his right testicle removed after the “game.”

“It’s just gotten way out of control,” urologist Dr. Scott Wheeler told KARE11.com

Wheeler now operates three or four times a year on boys who suffer complications such as ruptured testicles after being victimized in this game.

“All parents, you need to have this talk with your kids not to do it,” he said. “It’s lost its humor.”

There are dozens of YouTube videos of kids engaging in the “game.”  “Judge Judy” even devoted an episode to showing the severity of sack tapping.

Boys, please go back to video games.

That game should descend on these shores in a little while (things usually happen that way) and it is sure to bring a boatload of amusing Daily Mail articles, if they can bring themselves to write about nut sacks and ruptured testes that is.