I haven't seen any of those other threads.
Anyway, as far as children knowing what sex is, and what blowjobs are and junk, thats great for them. They know what ciggerettes are too. Would you give them some? I hope not.
Anyway, I've already washed my hands of this, and the conflict/problem/incident/whatever you want to call it, has been resolved. There is no need for further argument in this case, imo. The misunderstandings have been cleared, and a resolution has been reached.