The Hollywood Squares is an American panel game show, in which two contestants play tic-tac-toe to win cash and prizes. The board for the game is a 3 × 3 vertical stack of open-faced cubes, each occupied by a celebrity seated at a desk and facing the contestants. The stars are asked questions by the host, and the contestants judge the truth of their answers to gain squares in the right pattern to win the game. Wikipedia
Peter Marshall: Will humming help your tennis game?
Florence Henderson: Will humming help my tennis game? Sure, why not? It takes your mind off your balls, or something.