"Clicking out beats to the Mario tunes with disposable pens" sounds a lot less impressive and awesome than this video actually is, so you might as well go ahead and check the video after the break to watch for yourself. We can't help think that Shane has better things to do, but this is what the kids are up to nowadays, we guess. No more useless than pogs were back in the nineties, and a lot cheaper to boot.
A better question might be: Where can we get that T-shirt? Our extensive Google-searching turned up lots of great Mario shirts, but we couldn't find that one for sale. If you see it online, let us know in the comments below.