A little girl was asking her teacher.
Girl: Can my mom get pregnant?
Teacher: How old is your mom?
Girl: She's 40!
Teacher: Yes, she can.
Girl: Can my sister get pregnant?
Teacher: How old is your sister?
Girl: She's 18.
Teacher: Yes, she can.
Girl: Can I get pregnant?
Teacher: How old are you?
Girl: I'm 12.
Teacher: No, you cannot get pregnant.
A lil boy sitting behind the lil girl said, I told you we have nothing to worry about.
The teacher fainted.