When Japanese incorporates a Western word, especially English, often the spelling rather than the pronunciation is respected in the transcription, thus, ending up with a transcription that is not the closest possible within the limitation of Japanese phonology. And then, later on, on some occasions, (often young) people start to use a form that is closer to the original pronunciation, and there arise two forms. What examples can you think of for such cases?
マイコー(recent slang, especially referring to Michael Jackson)
バリボー (recent slang)
ピーポー (recent slang, as in
アポー (recent slang, especially referring to Apple computer Inc.)
The following are examples of different forms both respecting the original pronunciation, and are not examples of what I am asking:
ベンジャミン (as with the American president)
ベンヤミン (as with the German philosopher)