@BV: Well, beyond Kuro being split off from Illya (and thus technically a "clone"), Kuro is actually Illya's original personality, so there's a reasonable argument that Kuro x Illya qualifies as "Illya having sex with herself".
@Swag Wagon Miho X Yukari isn't a crack ship since Yukari is clearly at least crushing on Miho, even if its only 1 way, there's plenty to give a basis for the ship.
This is cute — I'm fond of "Honest Axe" references.
(The original usually has a sequel where a scheming fellow finds out about the woodcutter's new gold axe, so goes and dumps his axe in the same spring/pool — the god/fairy/whatever gives the options, but the guy is greedy (and presumably didn't get the whole story) so claims the gold one — and the god says "Liar!" and he loses it all.)
^ Why not choco laced with drug and aphrodisiac :v
Just kidding, I prefer wholesome normal chocolate. Even better if licking chocolate off each other's body counts.