This is the thread for all those gripes that you know are so unimportant in the grand scheme of things, and yet you cannot help but let them bother you.
For instance, do you know what really grinds my gears? The fact that I always offer to get tea / coffee for my colleagues, but there is this one guy who never EVER offers to get drinks for anyone else and only ever thinks about himself. He just got up a couple of minutes ago to make himself a cup of tea, and didn't say anything to anyone.
Also I bought a can of drink out of a vending machine yesterday and it should have given me 20 pence back in change, but instead it only gave me 10 pence.
Your turn. The more insignificant the better.