Little Johnny comes home from 3rd grade one day to find his mother baking cookies. Mom says, "Johnny, what did you do in school today?"
Johnny says, "you know Mom... the usual... math, recess, sex education, reading..."
Mom interrupts: "SEX EDUCATION?!?! You have SEX EDUCATION IN THE THIRD GRADE??? Tell me Johnny, how are they teaching you sex education?"
Johnny replies: "You know, mom... the usual way. We just take turns having sex with the teacher."
Mom says "WHAT!?! Johnny, you go up to your room right now and wait for your father to get home! He'll come upstairs and deal with you then!!!"
Later, after dad gets home, the mom fumes and relates the story to him, and instructs him to go upstairs and beat the crap outta the boy and make sure this never happens again!
Dad, on the way upstairs, ponders his mission. "Damn!" he thinks to himself, "I know I need to punish my son, but WOW - I was 19 before I got laid, and here's MY BOY gettin' some in the THIRD GRADE!!! What a GREAT KID!"
So dad walks into the kid's room and tells him, "Son, I just want you to know that I'm supposed to come up here and punish you, but I don't think that's right. In fact, Johnny, this is a big day in your life - a day I hope you'll cherish and remember! I just want you to know, Johnny, that I'm proud of you."
"So tell me, son, are you going to have sex with your teacher again tomorrow?"
Johnny replies...
"Gee Dad, I don't think so... my ass is still pretty sore from today...."
-td