Seeking Altman's funny language

Why does Altman nod every time he finishes fighting the little monster?

Possibility 1 indicates that the monster will pick up the box lunch.

Possibility 2 bid farewell to the monster's body

Possibility 3: He gives affirmation and satisfaction to his performance.

Possibility 4 indicates to the director that the episode can be over.

Possibility 5: Look at the signal light on your chest. How much time is left?

Possibility 6 nodded Altman shook his head Bruce Lee.

Possibility 7 Nodding can make the audience change channels.

Possibility 8 subtext: cooperate well

Possibility 9 The custom of Japanese Bushido

Possibility 10 Well, another level.

Possibility 1 1 Look down for explosive equipment.

Possibility 12 because they miss his mother.

Possibility 13 I'll go back to repair the equipment.