The peculiar nouns "-osity" thing was not originally a hacker thing. Discounting other unnecessary word endings being introduced to the public at large by the Fonz in Happy Days when he continually added the "-omundo" to the end of things, the "-osity" type of adjective -> noun mutilation may have been picked up from surfer/Cali talk, introduced into the mainstream by movies such as Fast Times at Ridgemont High (Spicoli) and later by Bill and Ted's Excellent Adventure and Pauli Shore (on MTV and then in really bad movies).

By the same token terms like "barf" and "bogus" were just popular terms in the very early 80s because of all of the California influence.

Of all of these, the ones that look most familiar for the time that really have little to do with popular culture of the time were: BITBLT (just because I remember seeing it and thought "what the hell"), crash (mid to later 80s when used the first Macs), and down (which wasn't really used much until the 90s, because when you couldn't connect to a BBS or Compuserve, etc. - which almost was never the case to my memory - you just couldn't connect, and prior to modems there was no connection- just cassette tapes and eventually floppies - and no I did not have a card machine :) and I didn't see a minicomputer with a huge-ass 8 inch floppy until my first network admin job in the 90s).

Basically, the majority of this is "bogus". ;)