My children, both of them, are seemingly incapable of turning over in bed without bonking their heads against the headboard or the wall. Several times a night I hear the rustle-rustle of a child shifting position, and then a big CLONK. I always tense up, waiting for the wail, but they never wake up or cry. I do supply them with pillows, and their beds are sufficiently roomy, so I'm not sure what's with all the skull-bashing. I suppose it does prove that I have extremely hard-headed daughters; something that I've already figured out the hard way anyway.