Bawdiness Rating: G/PG
Language: A few bad words, mostly towards the end
Topic: More grade-school potty humor than anything
I've have to say, I was pleasantly surprised by this Rifftrax, I even thought it was going to be the first "G" rated one until the last third of the movie or so. And even then, the words used weren't the harshest out there. It was quite enjoyable to hear the banter back and forth between Mike and Bill Corbett (you'll recognize him as Crow from MST3K), who seems to takes an 'observational satire' approach to his Riffing. Mike and Bill feel more alike in style than Mike and Kevin did, usually reflecting a critical, smart approach in the riffs they throw out instead of a good-cop / drunken-fratboy team. There was a little bit of off color humor that showed up here and there, but it was pretty much elementary-school level, a tad bit disappointing, but much, much better than it could have been.
Overall, a good Rifftrax, if you don't mind letting your kids watch X-Men, you shouldn't have a problem with this one.
Just thought I would post this for the dozen or so of us on this board who are concerned about it.