Me, introducing the new clock-nightlight gadget to the child:
"See, when the sheep's eyes are open and the light is green, it's play time. When she sheep's eyes are closed and the light is red, it's sleep time."
Child, already prying the sheep's eyes open with her hands:
"So if the sheep's eyes are open I don't have to sleep?..."
Me, making mental note:
"... I am not DMing for this kid. Ever." 
Vaguely related story: My nephew had a bad habit of getting up at 5 AM and calling out. They got him a similar bunny clock that showed a picture of a sleeping bunny vs. an awake bunny.
One morning the room was mysteriously quiet. They later discovered it was because the bunny clock had stopped, when an hour after normal wakeup time my nephew started wailing, "THE BUNNY NOT WAKING UP! THE BUNNY NOT WAKING UP!!!"
@MichaelTBacon if she figures out the sheep can also be unplugged, I'm toast 
@TarkabarkaHolgy Child-proof outlet covers! Child-proof outlet covers, STAT!
@MichaelTBacon oh she can't reach the outlet, I'm more worried about the USB port in the sheep butt