So #2 now has an additional hole in his head, and is quite happy about it. We explained the whole cleaning and 6 weeks deal, followed by the 6 month deal, and he doesn't seem to care about that at all. I'm of course overseeing his daily cleaning closely for the first few days to be sure he is doing what he is supposed to, then I will ease off and let him run with it.
Today after school, #1 approached me asking for chores to earn money so I could take him to have his ear pierced. I let him know that I would be too distracted with getting ready for my test Monday to even think about taking him to have it done before then. He seemed OK with that as it implies that I will be taking him after next Monday to have it done.
#3 hasn't said anything yet. I'm waiting to see how long before he starts asking.