a strangely goofy blooper

Around 65 mins. Pierre wants to smoke another cigarette but he puts it in his mouth the other way around, Instead of turning it around, he acts like he lights the brown filter end. You can see the flame is not on it but next to it. Then he turns away from the camera, expecting a "cut!" the director, then he looks down, then to the camera operator, almost starts to laugh, and looks away again. Finally the scene is cut.

Watch it here at 1:05:30 https://www.youtube.com/watch?v=tlxGJj-vC2k