about the midget story...I was not sure where I heard it, but it at least makes my point about the need to carefully assess pranks before the fact.

and cars....oh, yes....when I was about 17, working at a grocery store, one guy had a BIG yellow Buick convertable. He had a habit of pulling pranks on others,..like the infamous 'potato in the tailpipe in freezing weather'... so one day when he was parked way out in the corner of the lot, several others jacked up the rear of his yellow barge, put blocks under the rear axel just high enough to make the rear wheels clear the ground...maybe ¼ inch...and balanced delicately. He came out, got in, started the engine, put it in gear and....nothing...wheels humming, but no moving. He put it in reverse, raced the engine, put it back in drive and the torque shifted the weight so that it came OFF the blocks and jumped 15-20 feet before he could brake....Wouldn't you know...he whined!