As we sat in a restaurant on Sunday afternoon, eating our lunch, Drew leaned over to his Daddy and said, "What's that sound?" After pausing for a moment, we realized that Drew was hearing the sound coming from the hand-held soda machine a bartender was using.
We weren't really shocked that Drew heard the sound, as we were sitting fairly close to the bar. But we were surprised that he isolated the sound in a crowded restaurant, and recognized that he didn't know the sound, and was so intrigued by it that he just had to learn what the sound was.
Nearly four years later, and I'm still seeing my little guy hear new sounds for the first time. Pretty cool.