It is not an acronym of "Prisoner of Mother England". Acronyms are common these days but they were very rare before WWII and almost non existent before WWI.
Rhyming slang produced "Pom". The earliest name for new arrivals was "Jimmy" from Jimmygrant = immigrant. The red, sunburnt faces of new arrivals saw "pommygrant" from "pomegranate" replace Jimmygrant and pommygrant was abbreviated to "pommy" and "pom" - and it has stuck. It is usually not used in a pejorative or offensive manner but if it is, the person being referred to is well aware of it.
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It is not an acronym of "Prisoner of Mother England". Acronyms are common these days but they were very rare before WWII and almost non existent before WWI.
Rhyming slang produced "Pom". The earliest name for new arrivals was "Jimmy" from Jimmygrant = immigrant. The red, sunburnt faces of new arrivals saw "pommygrant" from "pomegranate" replace Jimmygrant and pommygrant was abbreviated to "pommy" and "pom" - and it has stuck. It is usually not used in a pejorative or offensive manner but if it is, the person being referred to is well aware of it.
https://en.wikipedia.org/wiki/Ten_Pound_Poms
I don't call them poms. It's a silly word.
Because they talkwith that silly accent...
And your people that protect your queen wear that big black silly "POMMIE" thing on their heads