A man was taking his son to the ball game, and on the way they stopped at the convenience store to get some candy for the game.
The son stopped and was staring at the condom display, when his father walked over and said, "Son, if you ever have any questions about this stuff, be sure to ask me".
The boy said, "Jeez, Dad, look at all these different boxes".
The Father replied, "Well, son, the three-pack is for when you are in high school. You need two for Friday night and one for Saturday night."
He continued, "And the six-pack is for when you are in college, you need two for Friday night, two for Saturday night, and two for Sunday morning".
"But what about this twelve-pack?" asked the boy.
"That's for when you are married", replied the father. "You need one for January, one for February, one for March........"