I loved Big Mouth. As most reviewers before me have also written, the show is not exactly subtle. That doesn't make it any less funny, however. The show has 5 main characters: Nick, Andrew, Jay, Jessi and Missy, who are all in their own way going through puberty. They come from very different homes, which causes them, along with the Hormone Monster/Monstress, to react very differently to all the new things they discover.
Most people seem to think the show is mainly meant for adults, because of the abundance of swearing, genitals, sex and the use of scary words like 'vagina'. I disagree, however. Although the show for the most part covers lighter subjects, such as first kisses and stuff, it's not afraid to occasionally touch on more serious items, such as sex positivism, especially for women, consent/boundaries, slut shaming, homosexuality etc. Things that are important to know, especially for boys, but are often not given enough attention, for example because of parents' awkwardness, or even neglect, as the show clearly illustrates. Paying more attention to the aforementioned topics at a young age, will hopefully create a generation of men more aware of what women go through, so they might avoid the mistakes Nick, Andrew and Jay make because of ignorance. Obviously, things like consent and boundaries are also important for girls. Girls get horny too, to quote the show, which causes the male protagonists' heads to literally explode. The prejudice that only men want sex hurts both genders, as it assumes men don't have boundaries and that men always have to be dominant to have sex. It's exactly these things that make this show so important. So by all means, have children watch this, show it to them in school. It's funny AND it teaches valuable lessons.
The only reason I didn't rate this a perfect 10/10 is that I personally didn't really see the additional value of Coach Steve, other than just being gross and possibly mentally challenged?