To be honest Tablet Pen Drives are the best. Even they get wasked with your clothes, they work. My tablet pen drive recently got washed with my clothes and still its working.
maybe you were just luckie
Or maybe I m right.
Or maybe I m right
in your case im sure you are right, but just because one survived dosn't mean they all will ,wash your a few dozen more time and see how it makes out .lol
So long as you let it dry completely before plugging it in (passing current), there is no danger. Water only harms electrical equipment when there's current and the water creates a short.