Heh, I remember messing around with the child guard for Daggerfall and Duke Nukem 3D. I was young then, 9 actually, and I decided to install the childguard just to see how different it would look like.
As a password, I entered something in the likes of "asjknhbvioj" then clicked "Ok".
Well, let's just say that my 2 brothers were pretty angry at me when they discovered the strippers in Duke Nukem 3D to be gone and the piles of bones in Daggerfall.