This video is hilarious. You might have your doubts in the first couple of minutes, but, stick with it. It's worth it. (I got it off of Grimm's site.) The comedian is Eric Lambert and the giggling man is Doug Collins. Here's a website with more details, if you're interested.
After a little investigation, I found out it was filmed at The Comedy Barn Theater in Pigeon Forge, Tennessee. I've never had any desire to partake in the good clean fun in Branson, Missouri or in any of those nice family places in the Smoky Mountains (I'm more of a New Orleans/Las Vegas kind of girl), but this video makes me think I might be missing something.
The video was first posted on YouTube by BrokerTim who says that this guy is his father and that is his real laugh. The video is about 10 minutes long but it's worth every minute.