This is a spoiler-free review for Big Mouth Season 2. All 10 episodes are currently available to stream on Netflx.
The first season of Big Mouth had a great many charms, but also a knack for getting in its own way. Coach Steve, for example, often felt like he interrupted the series’ candid, surprisingly deep conversation about puberty, while the ghost of Duke Ellington living in Nick’s attic felt completely extraneous, save for one very smart, hilarious musical number. But these criticisms appear to have been heard, as the second season really hones in on the puberty angle, looping in Coach Steve along the way, while dialing back pretty much every element that doesn’t focus on the characters’ sexual awakenings. (The ghost of Duke Ellington appears in just three or four scenes this entire season). The result is a refreshed version of Big Mouth that’s smarter, more focused, and, occasionally, quite emotional.
Source: IGN.com Netflix's Big Mouth Season 2 Is Smarter and More Focused