It’s commonly used when you pick up a radio on a public band.

So if you have a jobsite where there are 100 radios, and someone needs to reach Ted, they’ll page the radio and say something like “Hey Ted, do you copy?” and Ted will respond with “Go for Ted,” which means yes, Ted is here and he’s listening, go ahead.

It was used in a small way some 40 years ago and never really caught on.

Bone apple tea

It’s our national rodent and I’ll thank you to take appropriate pride in her. Squeeker squeek.

I think they’re saying “go for John”. I saw it on a movie once and thought “huh” and my buddy Chris did it a couple times, but that’s about all my IRL experience with it.

Where did you possibly here that this is a thing that’s said?

I don’t think I’ve ever heard someone say that at the start of a phone call but it’s common when communicating with two-way radios like:

“Alex for John, over”

“Go for John, over”

“”

I mostly heard that when working in large retail stores, usually the walkie talkies have an end-transmission sound que so we didn’t actually have to say ‘over’ at the end

I’m American and I’ve never heard this used.

But after thinking about it, gopher is a play on words that means “go for”. So saying gopher John is like saying “go for John” and can be a greeting.

They don’t

That’s not a thing.

You see in the US there are secret underground copies of all of our houses and gopher versions live there.

They are making it clear if you are speaking to John or Gopher John.

Sorry, for real I’ve never heard this before. Can you tell us where you heard it from? I’m really curious now.

I feel like OP forgot to add the punchline.

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