We were at Tupelo in Inman Square having brunch on the Sunday of the Spring forward (March 13, 2011). I put a spoon of yogurt into Sasha's mouth and felt something scraping its bottom. I put my finger into Sasha's grinning little mouth. He was more than happy to chew on it. Sure enough -- there it was. A tiny little tooth that I could only feel by pressing into his gum. It felt like one of the crocuses poking its head from under the snow. I realize that more than 100,000 babies probably cut their first tooth somewhere in the world at exactly that moment, yet I couldn't help holding my breath as if encountering something mystical and unique.