idea: robbing a convenience store.
Better idea: robbing a convenience store in disguise.
The reversal: The disguise is a pair of boxer shorts.
The Telegraph has the story:
Tazviona Maluge Bhebe, 40, stormed into an off licence in Sutton, South London, armed with a kitchen knife.
He was wearing a pair of light blue boxer shorts over his face, peering through one of the leg holes as he threatened 34-year-old shop worker Harry Mahalingham. [...]
He told Mr Mahalingham: "Give me your money or I will use the knife", it was claimed.
But the burglary was foiled when Mr Mahalingham jumped over the counter and beat Bhebe over the head with A-frame display sign, causing the boxer shorts to slip down and expose his face on CCTV.