Not since ruining a perfectly good Hamilton watch in the 1960s: I nearly dropped it on the floor as I was reaching to silence the alarm clock one morning. Somehow noticed I was about to shove the watch off the edge of the nightstand but managed to grab it. Then of course the autopilot in my brain helpfully took over and apparently suggested that since I had it in hand, why not put it on. Of course, and how sensible!
Next stop: shower, wash hair... I didn't even notice it then, until I reached for a towel, and then in hastily taking it off I did drop it... onto a tile floor. Yeah, don't ask. I tried two different jewellers...