English phrase "Can I help WHO's next?"

[guinevere]

In what part of English speaking world can you hear "Can I help who's next?" in, for example, fast food shops?

[Mister Micawber]

.
There is extended discussion on this, as you know, HERE.
.
_________________
Canadian-American native speaker
who teaches English for a living at Mister Micawber's
ESL cafe: Interview with Mr. Micawber

[Yankee]

.
I can vouch for the fact that this is a very common sentence in Connecticut (USA), but not just in fast food places. You hear it wherever there is a line of people waiting for a cashier -- cashiers seem to be particularly fond of this sentence.

After reading the other threads, it seems this sentence is common in many other places in North America too.
.
_________________
Amy
.
ESL teacher, translator, and a native speaker of American English

[Torsten]

There seem to be quite a few explanations as to the origin of this phrase and to me it sounds like two separate questions that are being asked in quick succession: Can I help? Who is next?
_________________
Test Of English for International Communication
TOEIC Preparation & TOEIC Vocabulary