Car keys and other random metal objects have caused the same reaction, hot pants! That's one of the indirect benefits of using an electric starter. I never finger flip my plane, so my NiStarter just lays by the flightbox, within reach of the electric starter. It's those finger flipper dudes that re-start out by the flight line and such that carry them in their pockets. So I protect my fingers and package all at once!!
I was just kind of harrier'ing around, and I got this warm, tingly feeling "down there", which doesn't usually happen unless I'm flying REALLY good, which I wasn't. Soon it became apparent that the heat was NOT a biological response to my aerobatic abilities, but of some other unknown origin. Luckily, I was flying low and slow' so landing didn't take long, just eased off the throttle and she was down. I was surprised to find the glow plug actually clipped and locked on the end of the starter, since I usually have a hard time getting it locked on when the plug is in the engine.I must have subconciously enjoyed it because a couple flights later, I did it again, only with ALTITUDE! This resulted in the untimely death of my SPA3D as well as a hole in my pocket and a blister on my leg. Hopefully, I've learned my lesson. At least it was just a SPAD. But I thought I should warn the other finger-flippers out there, lest they should destroy a NICE plane and maybe even their good pants. My package is still intact, thank God.