Some years back, a guy I worked with found a bank envelope in the lot of a market with a bank inside. It contained $600 plus in cash. Rather than go back into the bank and find out who may have cashed or withdrew that exact amount, which I'm sure the bank could ascertain, he pocketed the cash on a "finders keepers" mentality and bragged about finding it... When I asked him what his wife (who I knew) thought about that, he said that she had no problem with what he'd done.
Two people who's parents should be slapped about IMHO! Thankfully, these two people cannot reproduce...