BROYLES: Look at it. The swirl… it’s Bernini’s spiral altar at Saint Peter’s. It… doesn’t end. (3×19, “Lysergic Acid Diethylamide”)
Okay, so Red Vines don’t really bend that loosely, but they’re supposed to be DNA strands!
Here’s a link to some of the concept art for the animations from the actual episode (including the model for the tweety bird you see here):