A blonde comes home after school and says to her mother:
"Today we learned how to count. The other children could only count to five, but I can count to ten...and it's because I'm a blonde. Right, mom?"
The mother replies:
"Yes, dear"

The next day the blonde comes home froom school and says to her mom:
"Today we tried to recite the alphabet. The other children could only recite half of it, but I could almost recite the entire alphabet...and it's because I'm a blonde. Right, mom?"
The mother replies:
"Yes,dear."

The third day the blonde comes home from school and says to her mom:
"Today after gym class all the girls showered together. The other girls have really small breasts, but I have these big beautiful ones...and it's because I'm a blonde. Right, mom?"
The mother replies:
"No, It's because your 25 years old."