Thanx for everybody's feedback guys!
K.Whyjelly, thanx for giving me the right word for how you refer to pilots' slang. I will make sure I'll use this one next time I post a thread with a question about slang on an aviation forum (I aroused similar confusion over my question when I posted a thread like this on Airline Pilot Central Forum, so I think if I had written "banter" everyone would've understood what I was after).
SNS3Guppy, I know the official meaning of ETOPS, sir, and I am more interested in unofficial ones
like the ones I listed in my examples.
parabellum, thanx for your elaborate reply. I am fully aware that slang is not allowed in ops situations and must be invariably avoided. What I was asking for are the words you use when you chat with other pilots in non-ops situation like on a message board like that or in a pub or in a hotel room. But since you've mentioned that you pretty much use the same standard and official terms in non-ops situations as you use in ops, now I realize that the share of "banter" in the entire pilots' vocabulary is not that significant as I thought it was and there's little reason to explore this any further.
I've actually come across the examples I've listed while surfing thru the aforementioned US pilots' forum so I dare to assert they are not as nonexistent as you said they were
Me being an interpreter, my interest in "banter" is purely linguistic, not practical and I am collecting such words not to make an impression (since I can't think of a situation in my job where I could make use of them and even if there was one I would not use them coz folks for whom I usually interpret are not pilots and they will never understand those)
HOMER SIMPSONS LOVECHILD, could you please "decode" that one for me for errh...merely linguistic purposes?
I can understand some bits like "Scarebus", "fat dumb and happy" and....well.. "severe clear" is something about clouds...that's about all I can decode ^)