Clark approaches Chuckie and starts asking questions designed to expose Chuckie’s deception. The funny thing is as you watch it, you may actually feel sympathetic to Chuckie (who did lie) and more angry at Clark who comes off as an arrogant, snotty jerk.
Then in the pivotal moment of the scene, Will comes in, like a good friend, and shoots downs Clark’s pretentiousness and exposes Clark as well.
You can watch the clip here: https://www.youtube.com/watch?v=QnZ0Y4rvz6E