Cranking

Little Johnny is caught swearing by his teacher. “Johnny, you shouldn’t use that kind of language ,” says the teacher. “Where on earth did you hear such talk?” “My daddy said it,” replies Johnny. “Well, that doesn’t matter,” explains the teacher. “You don’t even know what it means.” “I do, too!” replies Johnny. “It means the car won’t start.”

Where is the French Border?

"Why do you look so glum today?", the teacher asked young Johnny. "I didn't have no breakfast," Johnny mumbled. "You poor dear," said the teacher. "Now, to return to our geography lesson, Johnny, where is the French border?" "In bed with my mom. That's why I didn't have no breakfast."

Little Suzie and Cake Baking

One day, little Suzie and her mom are walking down a beach when they see a couple having sex. Little Suzie asks her mother, "What are they doing?" And her mother replies, "They're baking a cake" so that she doesn't have to explain sex to little Suzie.
Later that day, after mom has tucked little Suzie into bed, little Suzie's dad comes home. Mom and dad decide to have sex on the couch.  
The next morning, little Suzie goes up to mom and asks, "Mommy, were you and daddy baking a cake last night?"
Mom replies, "Yes we were, Suzie. How did you know?"   Suzie replies, "Cause I saw some icing on the couch."