In episode 171 of Overthink, Ellie and David talk about butts. Why do humans have bigger rear ends than other animals? Why are butts often seen as a site of aversion? And is anal sex a metaphor for the universe? They discuss the evolutionary history of butts, how the music industry helped normalize bigger butts, and how the exploitation of Sara Baartman in the 19th century is part of a larger story about the sexualization of black women.

Overthink spills the tea on why gossip is a crucial form of social bonding, especially for the oppressed.

Why was Rousseau so obsessed with walking while thinking? What can we learn from evolutionary theories about walking? And is the wandering flâneur a symbol of modern life?

Many argue that polyamory has liberatory potential as a radical form of relating to others. Ellie and David examine polyamory re: human evolution and colonialism, and unpack the concept of compersion.