Two of a Kind

Why are your arms bigger than mine? So I can hold you even closer that's why. So why are your ears bigger than mine? That way I can hear when you're up to mischief that's why. And why are your eyes bigger than mine? How else could I see when your feeling good or bad? Why do you never sleep at night, and make me sleep early? The sooner you sleep the more i know you will wake up happy, and I stay up late to make sure nothing is in the way the next day. So why is your brain so much bigger than mine? Because you had taught me so much that's why. Is your heart bigger than mine too? Of course not, and it will grow even more everyday, and hopefully mine will be as big as yours.