In this comedic monologue Ira has to follow George Simmons, a famous standup comic, who has just done a very unfunny set in which he was clearly very depressed and reflective about his life. Ira has to follow George and has no choice but to improvise some humor about George's set.
Great chance for an actor to play the situation, which is rich in realistic detail. Ira is nervous to be performing, as he's new to standup. He's a bit thrown by what he's just witnessed Simmons do. He's reactive in the present moment commenting on audience members who rudely get up and leave during his set.
One of the strengths of this monologue is how Ira starts struggling with weak material about himself, then gains confidence as he gets on a role with the improvised material about Simmons. He's drowning up there and he saves himself by making a split second decision to shift gears and try fresh off-the-cuff material. There's a real sense of discovery for an actor playing this monologue, as your character is having these thoughts, inventing the material which is finally getting the desired response (laughter) from the audience on the spot.