Trivial things that make you annoyed beyond expectations?

[Electric_Andy]

I went to the tip in the car the other day. I was wearing my tennis elbow support. The lad at the gate said "what's going on with your arm?" And I said "I've got tennis elbow". He said "Oh. I thought it was w$nkers elbow (whilst doing the actions)

Just to clarify, this was a council tip, where the moron was being paid to deal with the public