A boy goes to the drug store with his dad and sees the condom display.

Boy: “Dad, why do they do packs of one condom?”

Dad: “Those are for the high-schoolers for Friday nights.”

Boy: “So, why do they make packs of three?”

Dad: “For the college guys for Friday, Saturday and Sunday nights.”

Boy: “Then why do they make packs of 12?”

Dad: “Those are for married couples — you know, January, February, March.”

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