Turn the other cheek? Religion is not inherently part of who you are as a human being like race, sex or sexuality is, thus, jokes about it are usually 'water off a ducks back' to any level-headed person. I can somewhat sympathise with you so if you want to take offence, sure, go for it, just don't do what some Muslims do when they feel offended. They can get scary. If someone makes a joke you consider inappropriate. Don't tell the joke yourself, and don't laugh at it. Anything else is going to far.