This is an illusion that you’ll only see once. This is because if you look at the funky black lines above, and try to figure out what they spell, at first, all you’ll see is gibberish. BUT once you figure out what the black lines are actually telling you, your mind now knows what it is supposed to be and it will be very difficult to look at them as just a set of black lines.
Give Up? The black lines represent the shadow of the most popular letter in the English alphabet. E.