My friend had one with Jack White. His band opened for him like ten or so years ago. When equipment was being loaded in for the show my friend stepped out for a cigarette by the loading dock and Jack White saw him standing around smoking and started yelling at him to get off his back and move equipment. When he said he was in the opening band Jack had kind of an “oh…” reaction and asked if he would give his crew a hand since he wasn’t busy. My friend was pretty disgusted that he would talk to his road crew like that.