I just got changed to come home, in the ladies. A colleague was in there at the same time, and as I walked out she asked why my shoes were so loud (in the office we are on carpet, so not heard).
"There are metal cleats in the sole"
"Eh?"
*lifts up shoe to show sole*
"Cleats"
"What are they for then?"
"They clip in to the pedal"
"What, so you're like attached?"
"Yes, stops you slipping of the pedals in the rain, and helps you get really stuck in on the pedals to be more efficient"
"But you're, like, attached? That's so dangerous!"
Apparently not being able to escape from being attached to the bike is another danger I'd not noticed...