You've been an aidworker for too long, if...
... If you resist throwing away that torn up, washed off, ravelled UNHCR T-shirt. Nobody understands your justification "but I wore that during the Rwanda refugee operation".
Your kids say it makes you look like an overaged hippie.
Admittedly, the Rwanda crisis was 16 years ago. Which is a real long time in the life of a T-shirt. But the memories are still so vivid.
T-shirts are forever. And so are the flashbacks that go with it.