[This joke is translated from this by Jeffrey Tam]
Why condoms are packed in three, six and twelve?
A dad and his 13-year-old son were shopping in Watson’s. When they were passing by the shelves for condoms, the son asked the dad:
“What are these stuff in boxes?”
The dad answered, “these are condom, to use for safe sex”.
Son: “Oh…Yeah! Condoms! The teacher told use about that on the sex education courses…but…why they are packed in three, dad?”
The dad was a little bit embarrassed, and then said: “err…these are for colleges students, one for Friday, another for Saturday and the last for Sunday…”
The son nodded…and asked again: “dad, dad! …then what are these packs in six for?”
Dad was #@$%&*!?~ and answered: “emmm……they are for master students, Friday two, Saturday two, and Sunday two…”
Finally, the son picked up a box, that has twelve condoms inside. Then, he asked, “……how about these?”
The dad take a deep breath and mumbled, “these are selling to the married people. They use one for January, one for February, one for March……”