A girl sits in the car with her mother driving on a cold day
"Mum my hands are cold can we put on the heater?"
"No, put your hands between you legs"
So the girl does just that and sure enough in time they heat up, the next night she's on the way back from the cinema with her boyfriend. Now she's an innocent little girl and has no idea of the birds and the bees...
"Why have you got your hands between your legs Annie?"
"Why Billie my hands are cold so my mother told me I should keep them between my legs to keep them warm."
Billie's smiles as a lightbulb goes on inside his mind...
The day after Annie says to her Mother
"Mum what's a *****???"
"You dirty little girl, that Billie's been doing naughty things to you hasn't he?"
"Why no Mother I'm a good girl."
"So why do you want to know what a ***** is then?"
"Well it's just that it makes such an awful mess when it defrosts!!!!"