Lesson 12's Exercise
Place the clothespin on one of his nipples and leave it there for 5 minutes. If the does not like the pain remind him that it is only his nipples. He has no need for nipples. You could put the clothespin on the head of his cock for 5 minutes.
When the 5 minutes is up pull the clothespin off of his nipple. Then place it on the other nipple and wait another 5 minutes.
When the 5 minutes are up pull the clothespin off the that nipple.
If you completed the exercise congratulations. You passed.