Say what you want as long as you mean for it to be funny because making a joke is an [i]attempt[/i] at something difficult, and failing is a huge part of it. And even if it gets a laugh someone's going to still be "offended" but that's all of what being offended should be is just "someone got offended" end of story. The only difference is that 20 years ago being offended didn't mean jack to anybody besides your mother.