One thing that is certainly a hot button topic in comics is the use of adult situations and language.
Sure, you'll never see Superman bending Lois Lane over, or Captain America calling The Red Skull "a worthless pile of Nazi shit." Mainly because these characters represent something bigger, ideals that represent the best in all of us. It's not what the core audience is looking for. There are lines of comics from the big two that cater to a more adult audience, with graphic violence, sexual context, and language, and their covers are labeled with a "mature readers" logo.
Townies isn't a book for kids. (Unless you are a terrible parent.) It contains adult language and situations. Mind you, there isn't any graphic sexual content, or over the top violence, but it does deal with scenarios that anyone under 16 probably shouldn't be exposed to. It's a loose autobiographical tale, and my life hasn't always been sugar coated. Sure, a lot of awesome people and events have adorned my existence. But there isn't a day that has gone by where I don't hear "fuck, shit," and various other colorful verbiage. People drink, smoke, and have sex. They make crude remarks. It happens. And there is absolutely no way i could in my right mind keep that out of Townies.
So, in short, if you are easily offended, invest in some earmuffs.