Suprised by the "M" rating
This game was originally made as an "April Fools" joke; a game so ridiculous it was good. I first purchased on Steam, before it was given a rating.
When I first ran the game, I saw the option to turn the adult content off. I turned it off, and didn't think twice about it. Reading the other reviews, the content can be pretty bad when it is left "on". I never came across it, but it might be a concern for parents with "curious" children. All the same, I don't believe the game merits its "M" rating.
Even with the adult content turned off, there is a lot of "violence". I've seen this as a complaint in common sense media. I think this is silly, since the creators made it impossible for anyone to die. Headbutt the unsuspecting off of a sky scrapper? They'll go limp for a moment, get up, and run away. If you're okay with Wiley Coyote violence, this won't phase you a bit.
The exception is the pentagram. If you should so choose, you can lick 5 innocents and drag them with your tongue into a pentagram circle. The innocents will then spin around in a ridiculous tornado fashion and disappear in a flash of light, granting your goat a new look and a new "black hole" special ability. Is it demonic? Yes. But IMHO it's making fun of the devil more than anything; and I am all for that.