Robin Williams and Craig Ferguson both know a thing or two about offending people. In this modern era of instant Internet feedback, it seems it's getting harder and harder to not offend people. Which is why, according to Ferguson 'The Late Late Show' (Weeknights, 12:37AM ET on CBS), you stick with Nazi jokes.

Williams modified that claim, though, with one caveat. It doesn't work if you're in Germany, as he found out first-hand. On a talk show, he was asked why he thought there aren't as many comedians in Germany.

"Did you ever think you tried to kill all the funny people?" he replied. The answer was not received with laughter.