Pregnant

In a second grade sex education class,
Little Girl :"Teacher, can my momma get pregnant?"
Teacher :" How old is your mother?"
Little Girl :" Forty."
Teacher : " Yes, Your mother could get pregnant."
Little Girl : " Can my big sister get pregnant?"
Teacher :" How old is your sister?"
Little Girl : " Nineteen."
Teacher :" Oh my yes, your sister certainly could get pregnant."
Little Girl :" Can I get pregnant?"
Teacher :" How old are you?"
Little Girl :" I'm seven years old."
Teacher :" No, you can't get pregnant."

The little boy behind the little girl gives her a poke and says
"See, I told you we had nothing to worry about."