"So you're telling me there's a chance" is a line from the hit 1994 comedy Dumb & Dumber.
The line comes from a particular scene where Lloyd Christmas, played by the actor Jim Carrey, asks his love interest what the chances are she would go out with him. She replies “one in a million.” Rather than being despondent at such small odds, Lloyd instead becomes elated–very happy and excited–by the fact, he believes that he does indeed have a chance at a future relationship with his love interest..
Examples how how this phrase could be used:
Friend: You know there is only a two-percent probability that your team will comeback and win this game:
Friend #2: “So you’re telling me there’s a chance!”
Friend: “Why do you play the lottery? There’s less than a one percent chance you’ll win. You have a better chance of being struck by lightning–twice.”
Friend #2: So you’re telling me there’s a chance!
Watch the famous Dumb & Dumber clip for yourself: https://www.youtube.com/watch?v=nFTRwD85AQ4