I was wondering where this lounge-lizard saying got it’s start. I found a
YouTube clip of Elvis saying it in 1956. I couldn’t find an ealier version, but my Googlefu is weak. Anyone?
Just a quick answer, though probably not the oldest.
From a 1902 newspaper advertisement
If you mean when did entertainers start using that, it might be harder to find.
Some things are so common as to not have a single point of origin. I don’t know but, I just want to add that my favorite variation was from a country singer, can no longer remember who: “My next song goes something like this…No, it goes *exactly * like this.”
Comic Stephen Wright does that line, exactly like that. 
Grump. That’s *Steven * Wright, of course. :smack:
Elvis use that same line at first appearing at the Louisiana Hayride Show 16th Oct 1954, introducing the newly released That’s All Right. It went something like this - I mean, I went exactly like this:
Announcer: “Elvis! How are you this evening?”
19 yo Elvis: “Fine! How are you, sir?”
“You’re all geared up with your band -”
“All geared up?”
“Let’s hear you songs -”
“Ah - well, I’ll like to say how happy we are to be down here, it’s a real honor for us to be… to get a chance to appear on the Louisiana Hayride… We’re gonna do a song for you… You got anything else to say, sir…?”
“Noo, I’m ready.”
“We’re gonna do a song for you we got on Sun Records, it goes something like this…”
[That’s All Right]
And then rock’n’roll was born.
And what about the (I assume) derivative “It goes a little something like this”?
-FrL-