Adding your mom's worldly wisdom to any situation always makes it better, and clearly the EU forums agree with this sentiment! Elbonio of the European WoW forums wants you to ask your mum to draw the Lich King, even if she's never seen him before. If she asks what he looks like, just ask her to draw what she thinks he'd look like.
I'm pretty sure I've seen this meme before, on the SomethingAwful forums, replacing Arthas with Homer Simpson, but the results are still pretty hilarious. Elbonio's been kind enough to compile a gallery of the kid-tested, mother-approved images that resulted from the experiment.
If you get your mom or significant other to do it, but don't have an EU forum account, feel free to post it in the comments below and I'll assemble them for laughs at a later date.
What are you waiting for? Go ask! But be nice, because after all, she's your mum.