One day a blonde came home from school and said to her mother, “Hey, Mommy! Today in school we learned to count. All the other kids could only count to 5, but I can count to 10! See? 1, 2, 3, 4, 5, 6, 7, 8, 9, 10! Isn’t that great?”
“Yes, dear, that’s wonderful,” replied her mother.
The next day, the blonde came home from school and said, “Mommy! Mommy! Today in school we learned the alphabet. All the other kids could only say the alphabet to D, but I can say it to G! A, B, C, D, E, F, G! Isn’t that great?”
“Yes, dear, that’s very good,” her mother replied.
The following day, the blonde came home from school and said, “Mommy! Mommy! Today we learned about numbers and letters. I’m so much better than all the other kids. I’m smarter than them, right, Mommy?”
Her mother replied, “Of course you are, dear. Is that why you think you’re better than the other kids?”
The blonde nodded enthusiastically, “Oh yes, Mommy, and I think it’s because I’m blonde!”
Her mother smiled and said, “No dear, it’s because you’re 21 years old.