Wikipedia:No offense intended
 | This is an essay. It contains the advice or opinions of one or more Wikipedia contributors. This page is not an encyclopedia article, nor is it one of Wikipedia's policies or guidelines, as it has not been thoroughly vetted by the community. Some essays represent widespread norms; others only represent minority viewpoints. |
As a general rule, if you're using the phrase "no offense intended", you are actually being offensive. (Of course, the original author of this "essay" intended no offense in this statement.)