Trippy Stairs Source/credit: Booooooom What am I looking at? This is an art installation by Derek Paul Boyle and features a mirror step on outdoor stairs. (It may be art, but can potentially cause many problems; slipping, tripping and upskirt voyeurism.) More optical illusions:Grill ModFair GameToe socks?Tippy toesNobody's cowNot a brickHigh-rise buidingsScrew hole
