wrote in message
...
Nail jello to a wall,,, push a chain up a hill? Here is a neat little
trick.Get an empty glass soda pop bottle and find an inside corner of a
bare unpainted concrete/cinder block wall.Bet somebody you can hang the
bottle in the corner.Rub the bottle up and down agains't the inside
corner of the wall.If you do it right,the bottle will stay right there
for a while.

I'm afraid you've got it exactly backwards. You need a painted wall for that
one, and I've heard of empty beer bottles staying in place for -weeks-.