Extracurricular Jokes

On his first day home from his extracurricular classes for the gifted, little Sammy said to his father, "Daddy, what's sex?"
The boy's father turned red and went into a long, detailed explanation of the birds and the! bees. When he was finished, Sammy pulled a questionnaire from his back pocket.
That's very interesting," he said, "but how'm I going to fit it all in this little box next tdi' sex'?"