I discovered Whimsy Cards.
Does anyone else think it would be possible to create a whole RPG based around the concept of whimsy cards?
Would we need more cards? Maybe we should weight the deck with a bunch of cards that say, "You rock, that totally goes the way you wanted." or something like that.
Are there any other cards that would make sense to add? Any card you could think of, just go ahead and write it here.

Yep. I know it's possible.
I remember that Everyway was based on a system that involved drawing Tarot Cards. Basically, let's say that the Player was fighting an army of rats and drew the "Death" Card. The GM Could take this to mean that the rat's die horribly... or that the player has become infected with a poison by a rat bite... or (if you read the fortune guide) you take the card to mean that there is a major change in the situation.
I think that such a system could really be alot of fun to play.
Though it leads to an issue of Skill's and Attributes. You'll probably need some abstract way of applying a character's skills to the effects of the card. It would just be a little awkward that a Level 99 Ninja Lord has the same chance of a "Horrible Failure" while sneaking as did a Drunken Troll with a heavy step.