A couple of Swedish bank robbers had the perfect plan: sneak inside a bank vault on Friday, spend all weekend emptying safe deposit boxes, escape when the bank opens again on Monday. They would have gotten away with it too, if it weren't for those meddling pee bottles they left behind. From the article: "They managed to surprise bank staff and escape when the vault was reopened. But prosecutor Frederik Larsen said they forgot to take the urine with them 'so we were able to get their DNA samples from the bottles.' The evidence helped prosecutors win a 21-month prison sentence for the Swede. His accomplice is still at large and the loot hasn't been recovered."