Scissors paper stone

The Fourth Doctor and Romana played a game involving hand shapes and the terms "stone", "paper" and "scissors" to demonstrate the cause of the stalemate of the Dalek-Movellan War. The players would simultaneously form one of three shapes with an outstretched hand: "Stone" (closed fist), "paper" (flat hand), and "scissors" (fist with the index finger and middle finger extended). A player who picked paper would beat a player who had chose stone ("paper wraps stone"), the one who picked stone would beat someone who picked scissors ("stone blunts scissors"), and a player who picked scissors beat the one who picked paper ("scissors cuts paper"). If both players chose the same shape, the game was tied. (TV: Destiny of the Daleks)

After shooting Ruslan's laser drill with her gun, River Song said that he must have been bad at scissors paper stone. (AUDIO: The Sonomancer)

Behind the scenes
The Fourth Doctor and Romana play rock paper scissors, also known as scissors paper stone, in the episode Destiny of the Daleks; however, the name of the game is not explicitly stated on-screen.