I’d be objecting just for the hell of it. Just to throw Bernie off his train of non-thought.
I would not be a bit surprised if MOM is not objecting because he knows that Bernie is asking and saying some of the things he is saying to get MOM to object, but since MOM is not objecting, he doesn’t know where to go.
When your straight man forgets his lines, your jokes fall flat. You look kinda, well, stupid.