When he started ranting about how the government was out to get him, I thought he'd 'lost his marbles'. [='gone crazy']
Let's play 'marbles'. = Let's play a game of 'marbles'.
the museum's polished 'marble' floor/staircase
(..) I wouldn't be surprised if someday you opened a cabinet, and... Hello! Karen, dear. Have you seen the marble backsplash? Oh, I just must show it to you. Excuse us. What are you trying to do to me, you backstabbing cow? They asked why the (..)2006 TvShow: Desperate Housewives Title: Listen to the Rain on the Roof Season: 3 Episode 1