The Sam/Joel relationship is arguably the headliner when talking about why Somebody Somewhere is such a winner of a show. It’s proof that this series understands and cares about how deeply important platonic friendships are. (And the on-screen chemistry between Bridget Everett and Jeff Hiller is unmatched, which doesn’t hurt.) But if you’ve been sleeping on how lovely and complex and relatable Sam and Tricia’s sibling relationship is, oh, I hope “What if it spreads?” woke you right up from that mistake.