Day1:

Kimberly, a blonde, comes home from school and says to her mum,"We learned how to count up to 5 today, Mummy. I got up to 10. Is it because I'm blonde, Mummy?"
Mum replies: "Yes, dear"

Day 2:

"We learned how to do the alphabet today, Mummy. The others only got up to E and I got up to S. Is it because I'm blonde, Mummy?"
Mum replies: "Yes, dear"

Day 3:

"We learned about breasts today Mummy. All the other girls are flat chested and I'm a 36DD. Is it because I'm blonde, Mummy?"
Mum replies: "No, dear, it's because you're 25."
.
.