I just saw some numbers, and it reminded me of how much I hate when people use weird apostrophes and quote marks around them.
In high school, our class officers got us shirts that said: Class of "97." WHAT? I couldn't even wear it, it made me cringe so much. Where were the teachers when that was approved?
Or things such as: He was born in the 70's. WHAT? Ugh!
(Actually, in the above paragraph, I started to write "like" and then I had to go back and switch it to "such as." Another pet peeve!)