I share your feelings about “groovy” and have always thought Friend & Lover - “Reach Out of The Darkness” (1968) was one of those songs I’d just as soon not hear.
Maybe we need to bring “groovy” back to replace “da bomb”?
“Bitchin” ~ 60’s SoCal surfer culture
In Navy comms, it’s signal strength (QSA) and readability (QRK), both on a 1-5 scale. QSA/QRK.
“Keep on truckin’!”
Plop plop fizz fizz oh what a relief it is.
I’m kinda surprised to learn it’s not still around.
They used it in the movie Ted. I had to explain it to some Thais, because otherwise it just sounded like two guys chatting.
“Here come da judge.”
You mean that line from Pere Ubu? That’s the only association I have for it. “49 Guitars & One Girl”
My fave:
“Time to make the donuts.”
I had to explain to my 16 year old son that in the old days (70s and 80s) someone described as a ‘dog’ was said to be ugly, and someone who is ‘foxy’ was good looking. Is it really not used at all anymore?
Favorites
I’m sorry Dave, I can’t do that. (2001)
To the Moon, Alice. (The Honeymooners)
Nobody puts Baby in a corner. (Dirty Dancing)
Well, both are still in use in these parts. At least in the crowd I associate with.
Best of that batch is “Stone Fox.” You just don’t get any foxier than that!
Wasn’t there a Hendrix song – http://www.youtube.com/watch?v=cXde4HuYgtM ?
in ham radio.
the first number is readability on a scale of 5.
the second number is strength on a scale of 9.
the third number is tone, if using morse code, on a scale of 9.
in ham radio (often needing/wanting to be brief) you just would say the numbers; “you are 59” or “you are 599”
CBers were windy people and say “you are five by five. 10-4, keep an eye out for bears, keep the shiny side up and the dirty side down”.
the last one could be added to this list. 10-4 good buddy.
Few people (ime, ymmv) ever talk about a B-side of anything, a phrase/word which referenced the other side of the 45rpm hit single we got at TG&Y, and which (again ime, ymmv) commonly meant some lesser known alternative to whatever subject was being discussed.
Along those same lines, I suspect “flip side” (as in the CB slang, “I’ll catch you on the flip side.”) may have more currency than B-side, but both reference things in the past that younger people may not connect with.
How often do you hear “8 track tape” being used?
Does anybody have any defunct disco-era slang to toss into this conversation?
I bet there may be some in Boz Scaggs - Lowdown
“What old man?”
“Why, you, sir. The troop thinks of you as the ‘Old Man.’”
From “F Troop.” O’Rourke would use this line on Captain Parmenter when working on one of his schemes.
“Agarn, I don’t know why everybody says you’re so dumb!” 
F Troop? I don’t think it unlikely that you have some ‘splainin’ to do to those on my lawn.
I loved it when the Punisher used that line in a comic book when he was getting ready to take care of business.
They called them B-sides because you got the song you wanted, and this other one besides. …