I was given some money for my birthday, I needed some sandals (didn't have any shoes other than walking boots) and I bought myself a pair with the money (cost £50). My DH, on the other hand has just spent £100 on a new pair of trainers, as he has joined a running club and wanted a new pair (nothing wrong with his others). AIBU to think I should be able to "claim the money back" from the joint account and use my birthday money for a treat.