Evils of LJ - N.S.F.W.

So, I was scrolling down my friends page and my mother comes into the room (the door was ajar, can't blame anyone but myself). The post visible on the screen was (Don't click it!) this, by jwz. How do you explain the non-selective nature of LJ Friends Pages to your technophobic and rather Victorian mother? I think I'll email this to a guy from work who might enjoy it, though...