Once Good Riddance/Time of Your Life came on the radio and I commented nostalgically that this was the graduation song for my year. My decade-younger cousin gave me a disdainful look and replied that it's the graduation song for EVERY year.

Appalled! Get a hit song from your own graduating year! This is part of the soundtrack of my whole final year, not just a single farewell event at the end of it!

(Not really angry at people using it, just feels less of-my-era if it's used for EVERY era.)