A young blonde girl comes back from school one evening. She runs to her mum and says:
"Mummy today at school we learnt how to count. Well, all the other girls only counted to 5, but listen to me: 1,2,3,4,5,6,7,8,9,10 !
It's good, innit?"
"Yes darling, very good."
"Is that because I'm blonde?"
"Yes darling, it's because you're blonde."
Next day, the little girl comes back from school and says:
"Mummy, today at school we learnt the alphabet. All the other girls only went as far as D, but listen to me: A,B,C,D,E,F,G,H,I,J,K !
It's good, innit?"
"Yes darling, very good."
"Is that because I'm blonde, mummy?"
"Yes darling it's because you're blonde."
Next Day, she returns from school and cries: "Mummy, today we went swimming. Well, all the other girls have no breasts, but look at me!"
She proceeds to flash her impressive 36 D at her mummy.
"Is that because I'm blonde, mummy?"
"No darling, it's because you're 25."