bus driver's nickname for people, mainly old or hard-of-walking, who have to get off the bus backwards, hence like a deep-sea diver would get off a boat.

now becoming a rare site due to the widespread use of low-floor, easy access buses. but can still be witnessed on the odd bus route operated with step-entrance buses, or coaches. national express seem to get a lot of this particular type of passenger.

generally these people will be the first to get up, and will be waiting by the door as the bus arrives at their stop. they will then proceed to turn around and move extremely slowly, whilst other exasperated passengers stand patiently waiting, wondering why he/she couldn't have just waited for everyone else to get off first.
"sorry I'm late, i had one of them bastard deep-sea divers holding me up, taking her time to get off"

"we've had a complaint. you apparently didnt stop to pick up Mrs. xxxxx this morning"
"thats because she's a deep-sea diver, and i was running late"
by kennygetmezantac August 21, 2011
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A person who deep sea dives in koi ponds. The person does this to find koi and collect their belongings.
Michaela is a koi deep sea diver and collects koi fish.
by Koi koi koi June 29, 2019
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