Christian humor doesn't always have to be what you expect. For proof of that fact I'd like to present to you Brad Stine.
He is unapologetic, not politically correct, and he could care less. Some people would label him offensive. I would choose to call it refreshing.
As a Christian, I'm sick and tired of being labeled as weak. We don't have to walk on eggshells to get through life. If our beliefs offend another religion, that's really not our problem. The Bible is the the only source of Truth as far as I'm concerned and everyone else can deal with it. To illustrate this point, the following video does a great job as well as making you laugh along the way. Brad Stine is one of the funniest guys you'll ever see and he just happens to be a Christian. Check him out here.
Offended By The Truth