Enough wriggling, bottom.

It's time to be still. 

In Andrew Daddo's story, Goodnight, Me, a toddler orangutan says goodnight to each of his body parts.  He thanks his knees for holding his legs together and points a tiny finger to his lips saying, "Shhh, mouth, no more questions."  On a snowy, blowy night like tonight, tuck your toddler in by saying goodnight to each part.  By the time you've named them all, even the wriggly bottom will be still.