Condoms
A boy and his father are shopping when they pass the condom aisle. The boy sees three pack sizes of condoms, a pack of three, one of six, and one of twelve. He grabs the three pack.
The father says, “Those are for high schoolers. One for Friday, one for Saturday, and one for Sunday.”
The boy asks, “Who are the six packs for?”
The father responds, “those are for college students. TWO for Friday, TWO for Saturday, and TWO for Sunday.”
The boy responds, “Ooo! What are the twelve packs for then?”
The father sighs and says, “Those… are for married men. One for January, one for February, one for March…”