What do you think about learning the net red open beer chopstick hand injury?

Net red open beer with chopsticks method, I also learned, but I was more lucky, and did not get hurt, in fact, everyone likes to accept new things, learn new things, and that way is particularly handsome, all want to show in front of others, I this also reminds us, I red open beer method in doing tutorials, tell everyone to pay attention to safety and some hair skills.