Your Argument Is Invalid

This screenshot was taken from the Carcassonne app on the iTunes App Store. So I figure it's only fair to warn you in advance – if you've never heard of or played that game (specifically the Dragon & Princess expansion), you're not gonna get this joke. Please don't downvote this image just because you lack the necessary context to appreciate the joke. (If the joke's genuinely not funny, though, then downvote away. I'll understand. I've been there before.)