Transparent coffee cup Photo by: jkvandersteen What am I looking at? This transparent coffee cup is a perfect physical illusion. The reflection of the saucer in the smooth surface of the cup completes the floral pattern nicely. More optical illusions:Oh deer! It's a catCat a logBlueberriesCup Half FullBird in the SkyTrail Runner Going into the WoodsMan BunBird Strike
