That Baby Laugh

My son is three and a half, and he still laughs like he did when he was one. You know, that awesome gurgly giggle complete with eyes that disappear into closed half-moon eyelids? It's one of the most joyful sounds and sights on earth, and I still get to enjoy that every day. I have no idea when he'll outgrow it, but I hope not for a long while yet.