“Ma! there’s nothing to do here!” complains the precocious protagonist of this rhyming tale set entirely in utero. It’s not exactly a scintillating experience spending nine months in your mother’s womb. You’re just stuck there at the end of that dumb bungee cord (a.k.a. the umbilical cord), with nothing whatsoever to do but slosh around. But, oh, the endless joys you have to look forward to as you listen to the tick-tock of ma’s happy heart clock and await that happy day when you finally come out to play.