When my ex-wife's little girl was 18 months, she was "helping" me wash walls in my kitchen. I started singing one of my favorite arias, and she stuck her sponge in my mouth. A little later, I started singing again, and she put the sponge back in my mouth. Later still, I started singing again, and this time, since she didn't have a sponge, she pinched my lips together. She's now nearly four, and the other day when I started singing, she told me to put a sock in it Her twin brother will usually just put his hand up to my mouth, but if I persist, he'll say, "Stop singing, Honey!"