Funny post I saw. I could resist posting it as it gave me a good laugh.(This reminds me of sticking your tongue on a telephone pole in the winter to see if you get stuck) 

Ever wanted to see the UMD disc spinning? You can.

 This is fairly easy to do so some of you might have done it. You open the umd tray and there will be a gap between tray and the psp. You may want to use delicate force to widen the gap temporaririly. If u delicatly slide the umd down this gap being careful not to scratch, you can place it on the slot where the umd should be if it was in the tray. Ive done this multiple times and my umd and psp have been fine. If you mess this up somehow don't blame me!!!! 

 I would only do this if you have a warrenty or you are very careful!!!!!! Sometimes it wont read the disc so you have to position it, align and make sure the umd is straight. Also make sure the umd is pushing down on the metal tab at the bottom.Now you can play a game and watch the disc spinning. (dont move psp alot once umd is inside.) There may already be ppl that know how to do this. I f you do post a better explanation, with pics if possible. People can eventually learn how to take off the tray and replace with a see-throu one. Post your experiences with this experiment!!!