I'm sure it's just me being a bit sensitive, but it irks me a bit when people ask me "what's the occasion" when I'm wearing a kilt. My response to folks who ask this question (or any of the variants, such as "Do you play?" or the famous "Are you Irish?") is "I just like it."

Watching people mentally scamper around trying to process the idea that someone would wear a kilt just because "they like it" makes me giggle a bit.