We play this in so many different settings it almost seems like more than one game. We take turns spotting something in our surroundings, be it indoors or outdoors, and say, “I see something… radial and blue.” Everyone else looks for the one thing in view that most perfectly fits the simple clue. The point isn't cleverness in guessing but in observation. Usually one clue is given (although sometimes in a 20-questions manner other clues are given too) and the object is to find the thing in view that most perfectly matches the clue. The better the players get (both the clue giver and the guessers) the more fun the game is.
“Okay. I see something bristly and chubby.”