Nanny and the Professor

"Dad why are you going into Nanny's Room?"
"Oh I have to tell her something. It is very important. I have to get something straght between us before the night is over."
"Can I come too Daddy?"
"Not this time son. This is grown up stuff. You will have time later when you grow up. Now go to sleep."
"Ok Daddy. Don't forget your rubbers."
"WHAT?"
"Nanny said you were going out to get some rubbers. I think it is going to rain really hard tomorrow."
"Oh yes, yes indeed. Now go off to sleep son. Goodnight."
"Goodnight Daddy."