Can anyone solve this?!?
My friend did a magic trick with a blick pen (just those simple black ink pens) where he put the blunt side in his fist so it was covered, and the tip facing out. He then slowly put the cap on the tipped side and opened his fist and the tip was where the blunt part was. he took off the cap that was at one point covering the tip and the other end was there. I watch him do this step by step in slow motion and saw nothing weird. How did he do this?!?