There were numerous aberrations. Two in particular spring to mind.
1.) While rehearsing in a complex of rehearsal rooms he insisted on sitting in the doorway with the door open and wanted everything really loud. When we suggested that this wouldn‘t be cool for other bands rehearsing there, his response was. “F*ck ‘em!”
2.) Our sax player was a German guy of mixed race who spoke good English but wasn’t familiar with all forms of colloquial English. Mr. Proby asked him to play some yackety sax. Our sax player didn’t immediately understand what he meant. His response? “Ya know, play me some of that n*gger sh*t.”
Fortunately for Mr. Proby, our Sax player, who’s about 6” taller than him, is a very calm person. I would have snotted the tw*t on the spot.