What's the dumbest way you have lost money for no good reason?

Posted by Ok_Abbreviations4687@reddit | AskUK | View on Reddit | 461 comments

Recently "lost" £100 because I was too lazy and put off sending in my open return train ticket back to Trainline, for which I had entitlement to a full refund due to train cancellations. All I had to do was walk 5 minutes across the road to the post office to mail it back to them. In the grand scheme of things, its not much money. But sure feels like a lot when all I had to do was just post something off. How many Greggs Sausage Rolls I could have gotten with that money.