Not directly. The Adulting applies to the entire blog or to none of it. If you’re concerned, you could contact staff via your Help button and ask them if it’s okay to run this one post without putting the whole blog in the Adult ctegory.
Thanks Raincoaster. I couldn’t find a way via the Support pages. Personally, given what else is “out there” I think mine is mild, but you are right, asking staff is a good idea – after all the USA is a little more conservative than other parts of the world.