After it has been established that it is 6pm, Felix says he can't go to dinner with Oscar because he promised his daughter Edna that he'd take her shopping for new clothes "this afternoon."
Felix is holding out his arms like a basketball net, and says I'm not a backstop. He meant to say backboard.
Felix says Edna is twelve, but earlier in the season she celebrated her tenth birthday.
When Felix is dribbling the basketball, you can see what appears to be actor Johnny Silvers shadow stepping into the hallway. This happens just after he leaves at the beginning of the scene.