The state needs to give public schools a larger 'piece of the pie'. [=the state needs to give public schools more funds]
He's the best player on the team and he wants a bigger 'slice of the pie'. [=he wants more money]
His plan to reduce the national debt seems like 'pie in the sky'.
(..) I'm sure the gentleman will sign you up. I drive a taxi at night, so it's hard for me... to work in the day. Then what exactly do you want? Would you like to come have some coffee and pie with me? Why? Why? I'll tell you why. I think you're a lonely person. I drive by this place a lot, (..)1976 Taxi Driver