i had a major falling out with the singer in my first band. guy thought he was Bono. sung even worse than the real thing.... ;-)
last gig i did, i asked if he would mind rigging his PA, (i dealt with mixing the vocals including foldbacks)
he just ignored me and got on with untangling a 60 foot, 20 year old orange extension cable. this was so tangled and twisted you would have needed a PHd in astro physics just to have sorted the first few feet.
he gave up after 25 minutes and i left after that gig
one other funny was playing at a MAG gig (bike show). we were "background entertainment"..if that makes sense.
after the 3rd song i think he was expecting the 1200 bikers who were milling about to stop what they were doing and bow down in wonder to us.
when this didnt happen he announced through the PA that "you can clap if you want to"
i told him to shut the f**k up.....
he didnt speak to me for the rest of the day