My father went on a Dale Carnegie kick in, what, the 70s, 80s? Long ago, but I still bear the scars. 😉 I picture Snape feeling much the same way about it. (The funny thing is to this day, I can still picture the damn image pops came up with to remember his own name. Now, can I remember that because I happen to know his name, or was the fool thing just that memorable? Hmm...)