No, it wasn't my gun, the restroom was a one-holer, and it was in a business where if the proprietors had known what happened, they would have just pointed and laughed.
In no-jacket weather, I've been carrying my two reloads in a spare snubby-size pocket holster in my left front jeans pocket. It's comfortable, they're readily accessible, and they're less conspicuous than in a mag carrier on my belt.
While I was paying careful attention to my 1911 in its Minotaur Spartan IWB, the other side of my jeans drooped just enough for the two loaded mags to slip out of the snubby holster and hit the tile. No harm-no foul, but a great teaching experience.
Keep track of all of your EDC gear, all the time. Thus endeth the lesson.