The origins of the 15, 30, and 40 scores in tennis are believed to be medieval French. It is possible that a clock face was used on court, with a quarter move of the hand to indicate a score of 15, 30, and 45. When the hand moved to 60, the game was over.
My sexy wife showing off her big titties. Says she will move her hands if she gets a good reaction, but what if my cock was in one hand and your cock was in the other?