Clark Magnuson wrote:
1) I tried to soundproof a door by filling it with sand.
But the door flew off the roof of my car on the way back from the sand
lot, and got a leak.

When ever the door was opened or closed, it left an arc shaped trail of
sand on the floor.

2) I tried to dash mount an oil pressure gauge in my car.

When I tried to drive to work, it shot hot oil in my lap.

It could have been worse.

A cow-orker of mine dash-mounted an oil
pressure gauge and laced the poly tubing
next to the exhaust manifold. The car
went into afterburner on the freeway at
70 mph.