Guess which one fell out? The one with the protective cap? No, of course not. I heard the distinctive sound of a nice hard rubber mouthpiece clattering across the floor. This blog is just to show you what can happen. It didn't shatter or break. In fact, at first I thought that everything was okay. I get a lot of mouthpieces in that look "good" that really aren't. They have been dropped, or knocked around in a case with other items and the lay and tips may look okay to the naked eye, but under magnification there are issues.
If you have read anything about mouthpiece facings, you know that the lay is generally fabricated by measuring in thousandths of an inch. My bouncing mouthpiece messed things up by more than a thousandth of an inch.