A Late Developer

Hush little baby, don't you cry
Mama's gonna give you an alibi
Don't you worry little bird
No-one remembers, no one heard
Just lie back and shut your eyes
You won't feel a thing
At least not now but maybe when you're forty
It's gotta bit late and you're quite a bit late
How soon is late?
Put her on a pedestal, put her in your pocket
She won't feel a thing
At least not now but maybe when she's forty
By then it's too late, she will be quite late
How now is lately?
Johnny come lately has come early tonight
He won't feel a thing
At least not now but maybe by ten thirty
By then it's too late, it's all too late
How late am I?