...another oldie...
Adjusting the timing and installing a new belt on the old VW motor. You can statically time VWs just by rotating the crank while watching the rotor (and I had a degree pulley on the crank). Usually just took a socket wrench to turn the bolt on the alternator pulley to work the crank pulley over (attached via the belt).
Decided to start up the motor after the adjustments, and suddenly, WHAM! WHAM! WHAM! WHAM!....the sound of the still attached socket wrench spinning on the pulley and the handle banging on the inside of the decklid!
Eventually it flung loose and catapulted over to the neighbor's yard!
