Saints signed QB Nathan Peterman

Someone fill me in on everyone laughing.

Is there some backstory on Peterman I'm unaware of?

Or did everyone think we were going to sign a high priced, stud backup QB... and therefore views this as a comical signing by our FO?
They saw the name and assumed it was a dumb signing because of Peterman memes and expecting a overpriced backup QB, not knowing signing Peterman is to help entrench Haener as the QB2 and using the cap wisely