How would a British Londoner, pronounce the words "Thunder Muscle"?

That would be right, particularly for north and east London, and Essex. My partner’s Essex cousins all speak like that.

http://www.whoohoo.co.uk/main.asp

What a different and fun questions. You had me search the Internet trying to find a Cockney translator and every English dialog save “posh.”

Well fred wasn’t any help.
http://www.cockneyrhymingslang.co.uk/rabbit

My dear friend from Birmingham sounded much like that as well. All “th” sounds were “F“s

My son attended graduate school in Italy. He had studied every summer at another Italian school during his four years as an undergrad as well.

Suffice it to say he made a lot of friends during those years and many of the British student ended up at Oxford. One year I gave him a round trip ticket to England for his birthday and he stayed as a guest on a houseboat next to the university.

Later I rec’d a call from a friend in England and I was expecting not to be able to understand them—another friend had had a heck of a time understand people in London, but this young woman sounding like the Queen was calling. So much for difficult to understand dialects. It was like a bustle drama on PBS.

Not all Londoners would pronounce it that way, only cockneys.

@ucme not just cockneys, that pronunciation gows out to the north-east of London too. As evidenced by my partner’s Essex cousins – “Basiwdon” and “Sarfend”.

@downtide Yeah, I was thinking more Alf Garnett than anything else.