I enjoy jokes about the cheese-eating surrender monkeys as much as anyone, but the truth is, the individual French soldier of 1940 was generally as well trained and equipped, and just as brave, as any soldier in the world. Unfortunately for them, the French leadership was so reliant on the Maginot line that when it was bypassed by the Germans, they had no real plan to re-deploy their army and defend the interior. They simply couldn't adapt their strategy fast enough to counter the German Blitzkrieg tactics. There are plenty of stories of individual French (and British) units that gave a good account of themselves, but the overall tactical situation decayed around them so quickly, it ultimately didn't matter.
Anyway, that's my 15-second synopsis of the 1940 French campaign.