Season 5: Episode 118: The One With The Ball
Joey and Ross have a game of catch, and inadvertently lose track of time, playing right through lunch. They decide to see how long they can keep the game going without dropping the ball, and soon it's been several hours. Monica joins the game, her competitive streak kicking in, and she reluctantly allows Chandler to join, although she proceeds to keep the ball away from him, believing he'll drop it. Meanwhile, Gary asks Phoebe to move in with him, and she reluctantly accepts, until they wake up one morning to the sun shining through the window, the birds chirping outside, wrapped in each other's arms ... and Gary pulls out his gun and shoots the bird to keep it quiet.