I’m looking for examples of common audience additions to songs when performed live, or otherwise heard by a group (as in at a club.)
Two examples are:
Billy Idol’s cover of Mony Mony with the “… get laid, get fucked” chant between verses.
Jimmy Buffett’s Margaritaville with the “hang on, hang on, hang on” chant after the lyrics “… That frozen concoction that helps me hang on …”
There must be others, what are they?
Hugely successful Aussie band The Angels had a big hit with Am I Ever Going To See Your Face Again? Whenever they performed the song live, when singer Doc Neeson sang this line the whole audience would respond, No way, get fucked, fuck off!
According to Neeson the genesis of this was from a DJ at the Mt Isa Blue Light Disco (a youth activity run by the local police), who encouraged the young kids to chant it.
Here is an exhibition on Aussie TV 20 years later.
I usually hear “…lost shaker of salt” “salt…salt…salt”
Rudolph, the Red Nosed Raindeer ‘Like Monopoly!’
Rocky Horror Picture Show: Everything.
I never heard that. At what part of the song?
Like Monopoly follows the words “play in any reindeer games”
In addition “had a very shiny nose”…“LIKE A LIGHTBULB!”
Rudolph the red-nosed reindeer (reindeer)
had a very shiny nose (like a lightbulb!)
and if you ever saw it (saw it)
you would even say it glows (like a lightbulb!)
All of the other reindeer (reindeer)
used to laugh and call him names (like Pinocchio!)
they never let poor Rudolph (Rudolph)
join in any reindeer games (like Monopoly!)
Then one foggy Christmas Eve
Santa came to say
Rudolph with your nose so bright
won’t you guide my sleigh tonight?
Then all the reindeer loved him (loved him!)
and they shouted out with glee (YIPPEEE!)
Rudolph the red-nosed reindeer (reindeer)
You’ll go down in history (like Columbus!)!
We’ve been doing it like this as long as I can remember. I STILL do the interjections whenever the song comes on the radio in December. Supervenusfreak just looks at me and shakes his head…
Couple of country songs I can think of.
Hank Williams Jr.
Family Traditions
Chorus:
they get on me wanna know Hank
why do you drink?
(audience input: to get drunk)
(Hank) why do you roll smoke?
(audience input: to get stoned)
Why must you live out the songs that you wrote?
(audience input: To get laid, get fucked)
Another one is by Steve Goodman
YOU NEVER EVEN CALLED ME BY MY NAME
AND I’LL HANG AROUND AS LONG AS YOU WILL LET ME
(audience input: you bitch, you slut, you whore)
AND I NEVER MINDED STANDIN’ IN THE RAIN
BUT YOU DON’T HAVE TO CALL ME DARLIN’, DARLIN’
YOU NEVER EVEN CALLED ME BY MY NAME
jayjay has it all wrong. It’s call him names “like Dumbo” and you’ll go down in history “like George Washington”. I still sing it that way, yes.
Heretic! 
We always added when Santa came to say (hohoho) and he’ll go down in history like the Flintstones.
Another song is Seven Drunken Nights where after the band sings “Well I called me wife and I says to her” Men: “Hey wife, you bitch” Women: “Whaddya want you drunken asshole?”
Audience parts in bold.
The Wild Rover
“Fore it’s no nay never RISE UP YOUR SKIRTS”
The Fields of Athenry
“Where once we watched the small free birds fly - **oh baby, let the free birds fly **/ Our love was on the wing - Sinn Féin / We had dreams and songs to sing - **IRA **/ It’s so lonely round the Fields of Athenry.”
My friend always sang somehwere in there, “Sex on the floor!” (I don’t know the song very well, myself)
Not a vocal add-on per se but we’ve made it a habit on the Wilson Sisters Christmas classic Hey Santa that when they sing the chorus words of “Hey Santa” we sing along while flipping the bird.
At my college there was a bar that would play American Pie most nights around midnight. There were a few additional lines everyone would add to the chorus:
So bye-bye, miss american pie.
Drove my chevy to the levee,
But the levee was dry.
And them good old boys were drinkin’ whiskey and [BEER!]
Singin’, "this’ll be the day that I die.
“this’ll be the day that I die.”
[DRINKIN BEER WITH MY FUCKED-UP FRIENDS!]
Barrett’s Privateers
“We’d fire no guns, shed no tears DRINK MORE BEERS!”
We’d sing “Right up your kilt” at that point, but that fact that there it was a proud Scotsman who owned the pub we hung out in probably had something to do with that.
“Sweet Caroline” is pretty notorious for sing-alongs around here.
Also, “You Picked a Fine Time To Leave Me, Lucille” always gets the “you bitch, you slut, you whore” response.
“And I’ll never get used to not living next door to Alice.”
Audience: “Alice? Who the fuck is Alice?”
A republican version of the Wild Rover:
“And it’s no, nay, never…”
Audience: “Tiocfaidh ár lá!”
“…no nay never no more…”