A MINNESOTA teenager had to have his testicle amputated after being punched in the groin by a classmate. KARE11.com said David Gibbons, 14, was changing classes in his Crosby high school when he was attacked by another student playing a game called "sack tapping". David’s mother, Christy Gibbons, said it wasn't until hours later that they realised something was wrong. "One o'clock in the morning he woke me up and told me he was in excruciating pain," she said. David was taken to St Joseph's Hospital in Brainerd, Minnesota where surgeons removed his right testicle. And David is not the...