I don’t know exactly why, but I get the distinct impression that, of all the Enterprise senior staff, Dr. Crusher would have been quite the prankster. In fact, I think she would have been more of a prankster than Riker could have ever dreamed of being. She had access to medical supplies, after all. Think of the possibilities there!
I actually have thought of the possibilities and even came up with a little series of pranks…a minor competition between the CMO and Number One regarding said pranky, playful fun. I’ve never written it down, but maybe I’ll finally lay down the gauntlet and establish just who is really “Number One” when it comes to on-board jocularity.