Today I was going to get a new haircut. I had let my hair grow for some time (1-2 months) and since we're heading for winter I didn't really want the 7mm haircut I've had for some time.
So, when I was at the hairdresser I said that I wanted a different haircut and she asked me if 18mm was ok. Since I didn't have much to go on I said ok. Moments later I look in the mirror and realize my mistake.
Well, next time I know that 18mm is too short...
Note: The reason why I know the length is because the hairdresser cut by machine.