This isn't even close to those movies you mention, Family guy was funny, a long time ago, not anymore. This just isn't a good example of the type of comedy it's trying to be. In my opinion it's a turd. I was going to try it again and then I remembered quite how * it was. Enjoy, if it's your thing, but it's not mine.
As a cowardly farmer begins to fall for the mysterious new woman in town, he must put his new-found courage to the test when her husband, a notorious gun-slinger, announces his arrival.