What is the most annoying thing that has happend to you?

The most annoying thing that has happed to me is that a few weeks ago I went to a CarBootSale and I was looking forward to getting brand new roller skates and I bought some for £2.00 and a helmet for 50p but I did not try the roller skates on.When I got home I was really disapointed when I tried them on because they did not fit.But at least I got an awesome helmet!!!