A father and his 10 year old son walk into a pharmacy. As they approach the register the son sees a stand with condoms and asks his father what they are for. Deciding to be honest to his son he tells him
"This is what men wear during sex."
"Ah yes, I think they told us something about this in school" replied the boy. He then went to the box that had 3 condoms and asked what they were for.
The father responded:
"This box is for high school students: one for Friday, one for Saturday and one for Sunday"
"And the 6 pack" asked the young boy again
"That one is for college students: 2 for Friday, 2 for Saturday and 2 for Sunday" replied the father.
"And what about the 12 pack" asked the little boy.
"Well this is one is for married men: 1 for January, 1 for February..."