Hmm, I don't know anything about the Friendship Code, but it would make my heart warm if all y'all who were buying one just said a friend had referred you.
No other credit is necessary, really. I'm just happy enough to spread the relief. Also, I don't know if I (or anybody else) had addressed this yet, but it's pretty impossible to push them out with your muscles. I do my Kegel's religiously and the best I can do is to push it down a little bit so I can get a better grip. I've never been able to push it all the way out sans hands... and I've tried!