Here is a French joke that is funny only in French. I present it here as a puzzle to my English-speaking readers.
This colonel in the French army was in the restroom. As he was midway through the business of relieving his bladder, he becomes aware of this tall general standing next to him, and realizes that it is none other than Charles De Gaulle. Now, what do you do when you find yourself a sort of captive audience next to your big boss for a couple of minutes? Well, you have to make smalltalk. So this colonel rakes his brain for a suitable subject. Noticing that the restroom is a classy tip-top joint, he ventures:
“Belle piece!” (“Nice room!”)
CDG’s ice-cold tone indicates to him the enormity of the professional error he has just committed:
“Regardez devant vous.” (“Don’t peek!”)