On NPR this morning, there was a story about a "bike" convention going on in Arizona. Both my roommate (who hasn't touched her bicycle since moving it into the garage last year) and I (rabid two-wheeled commuter) had a double take when they started talking about the size (large) and age (old) of the "bikers."
As I was trying to picture what kind of bike rally this could possibly be, my roommate mentioned, "You know, when I hear the word bike, I picture a bicycle, not a motocycle." It hadn't even occurred to me that there were multiple versions of "bike" before she mentioned that.