It means that you're gullible (in the sense that you're not city-slick), and the bridge in the phrase refers to the Brooklyn Bridge. If you believe that I will sell the Brooklyn bridge to you because you would go for it and think it's a bargain.
Georgia replied, "Snoball, if you believe that I have a bridge for you."
by Sn0ball July 16, 2007
Can you define these popular missing words?