Hi everybody! This is a simple magic trick that, as the name says, is a pen "pen"etrating an arm...AAAAAAAAAAAAAHHHHHHHHHH!!!!! Just kidding. The pen isn't really going through your arm, but it sure looks like it! I freaked a lot of people out at school. And I grossed out all the girls...until everyone knew the trick. It had the same effect on all the teachers. If you do it at school, post a comment about, I'd like to know! Well, with out further a do, let's start!