In September 1992, robbers in Las Vegas held up a van thought
to contain gambling chips, only to find that it was carrying
potato chips instead.

In 1998, a guard was caught smuggling a wad of money in his
underpants out of a bank in Atlanta when a tiny security-dye
capsule exploded, blowing a hole in his trousers.

In 1998, a would-be Texas grocery store robber went to the
trouble of disguising his face with a balaclava but forgot
to remove from his breast pocket a laminated badge which bore
his name, place of employment and position within the company -
an oversight spotted by at least a dozen witnesses.

A 1975 raid on the Royal Bank of Scotland in Rothesay degen-
erated into farce when, on the way in, the three would-be
raiders got stuck in the bank's revolving doors and had to
be helped free by the staff. Undeterred, they returned a few
minutes later and announced that it was a robbery. The staff
thought it was a practical joke and refused to pay up. While
one of the men vaulted the counter and twisted his ankle on
landing, the other two made their escape, only to get trapped
in the revolving doors again.

Source

24 threads! Keep em coming!!! (Please restrain your self at 50 )