emmabelle,
The times I have been there, there was some subtle adult comment jokes. Kids nowadays are more grown (or at least think they are) then when I was growing up, so it might be ok. As everything else on PI, the earlier you go, the more PG it is. The same thing goes for the comedy warehouse. That is another not to be missed spot. I love being one of the first 15 or so people in, so I am down front. They do a lot of improve with ideas from the audience. I have given them ideas twice while sitting down front and they have used them.