Literally. One of the 90 tins of shit created by Piero Manzoni in 1961 has been sold to the Tate Gallery for £22,300 (!!). The original price of the cans was valued by the artist (hilariously), as equivalent to price that they would have fetched had the shit been gold. But the Tate have gone one step further and paid a going rate of £745 per gram, nearly £200 pounds more than the equivalent lump of gold would cost.
Crap in a can and sell it as gold -- why didn't I think of that?