The Blossoms were already viewed as the wacky family, just not necessarily of the whacky variety. Several times it was commented on how the house, grounds, and family came straight out of a gothic novel… But yes, there is definitely a hole in the facade they thought they were keeping up…

Archie really is the straight man in this whole ensemble; and that's okay.

Looking it up, I was surprised that in the US, once you get to first cousin once removed, even, only in 4 states in the US is that illegal. Nowhere is it listed about second cousinship, but they could be considering first once removed to be equivalent.
https://en.wikipedia.org/wi…

Jason and Polly doesn't even rate on the incest-meter… as they haven't shared an ancestor since their great-great-grandfather. [Mr. Cooper said that he & Killer's grandfathers were brothers] That distant a relationship has never been either illegal nor considered too close biologically or ethically. So that part felt…

Probably my favourite non-plot moment was her cutting into that cherry pie when Betty had Jughead over for dinner… I'm very glad Madchen Amick didn't drop off the face of the earth like many other Twin Peaks actors.

Yeah, I guess B.O.B.'s been hiding out in Riverdale for the last 25 years…