I’m a bit upset with the applause he got. Not everyone applauded and it only happened 3 times during the lecture but nevertheless I enjoyed watching him get nervous when his punchlines were getting no reactions prompting him to start smacking his hand on the podium.
Most likely O brought along his own cheering squad.
I noticed that pounding, too. It's symptomatic of his frustration that no one there was taking him seriously and he even he realized he was flopping.
kind of like they was looking at who was doing hand signals to what they are expected to do Or just camera angle