Commemorating javascropt's cousin, phpo! It's… well… phpo. You'll definitely get some comments from this sticker. If you're feeling daring, buy the shirt!
Note: Stickers come printed on a square backing, even though they're kiss-cut. Because of this, the sticker isn't exactly 2×2″/3×3″—that refers to the square backing, but the edges basically reach to that dimension!