How to respond to someone who has a problem with what you post on Facebook?

Hi! Lets say you make a funny, but off color statement, for your friends on Facebook. That is what Facebook is for, right? Let’s then say that someone writes you a note telling you to tone down your posts because children and members of their church might see it. Aside from the fact that this person does not understand that properly set Facebook permissions would prevent that. What might you then post on your Facebook wall in response?