1. Obtain copy of or look out for the Simpsons episode where Bart sells his soul to Millhouse.

2. At the start of the episode Bart tricks the congregation into singing a rock (and/or roll) song :)

3. As the various people of Springfield pan accross the screen keep an eye out for lovable OAP Jasper.

4. Looking closely at him or pausing it and looking closely at him will show that his white beard is now as yellow as he is! Rather disturbingly actually!