R2D2 on Fire

From - Erik Sorensen
Me and a friend were playing around with a mini-amp that was fitted into box of camels (somebody had already smoked the cigarettes). At one point my friend took the amp and moved it over the the body of his telecaster and it went: "bling-whooop-za-nannah!". It's just simple feedback of course, but if you have one of these little buggers, try the trick. Simply move the amp in circles above the pickups and it'll sound like R2D2 with his main transistor on fire.