Sure, I was completely overdressed.  Never saw that coming.  Still, that's not why I felt like a doofus.

I noodle around with bikes all the time, have several vintage steel bikes, a little workshop in the basement, etc.  As usual, I was messing around with my bikes over the weekend, rode my Masi Sunday. This morning, my commuter bike reminds me all the way to work that his chain needs to be lubed (got wet Thursday and Friday).  That's why I felt like a doofus.