Zach just told me that he needed to turn his power off, so he went under the counter in the kitchen, turned his back to me, pulled up his shirt and started twisting something. I asked him if he'd show me his power button. He pulled up his shirt, pointed to a nip and said " see mom, that's where you turn me on and off. You just have to twist it".
He didn't get why I thought it was so funny, so maybe when he's older I'll have to let him watch The Wedding Singer :)