Dive Master
By day a polite and responsible respectable dive instructor, usually found somewhere in a tropical climate teaching tourists to dive in a safe and responsible manner, by night a drunk womanising chain smoking inhabitant of any given beach bar, destined for kidney dialysis in later life. Cayman Island divemasters are reputed to be the most outlandish
"did you see that guy fighting and vomiting at the same time in the bar last night? I think he was a Dive Master"