>>226322It's not normal or accepted behavior, just a dirty trick that some weirdos employ. In a high school (folkstyle/scholastic) wrestling meet one of my teammates suddenly flipped out, slammed his opponent hard on the mat with an illegal throw, and stormed off the mat. Coach was pissed for about two seconds until he threw down his headgear and yelled, "he stuck his FINGER in my ASSHOLE," at which point Coach's reaction indicated he didn't fault him for hurting the other kid, who didn't get back up and had to be carried out to an ambulance on a stretcher.