Fist full of pennies weighing you down?
This will certainly make your pockets lighter.
Watch this chemical reaction as the zinc core of the penny dissolves without destroying the copper outer shell.
It's illegal to do in the U.S. on American coins, so use a Canadian coin.
If you think that's ridiculous, hear this: it costs the US government 1.23 cents to make a penny--- 25% more than the value of the coin!