English pronunciation

I find it hilarious that there are different types of spoken English language (American, The Queen's, Australian) and that there are distinct accents within those regions. So many words that are pronounced differently, and sometimes it's not even a regional thing so much as a personal tendency based off how one is raised.  What do I mean?

Take the word "new".  Do you say it as "nyew" or "nooh"?  I think I use the former for "New England" and the latter when I say "New York".  It's just too busy for my lazy tongue to go back and make two consecutive "y" sounds.

Or the word "aunt".  Should a someone teaching English abroad tell his/her students to say it as "ant" or "ont"?  Answer: both.  But there's no real rhyme or reason to which one to use.  I have a friend with an Ant Mary and Ont Michelle.  Why? Well, because.

Aaand the word that got me thinking about this topic is bagel.  Duh, you might say, it's pronounced "bay-gull".  Well, that's what I think is right, too.  I had never heard it said any other way until this:

This almost seems like some made-up pronunciation used for comic effect, right? Well, actually (yes, I'm pushing the bridge of my glasses further up my nose as I write this), creator Dan Harmon actually mentions in the commentary track for this episode that he says "bagel" weirdly.  The way he says it is more like "baegle", a cross between the regular version and Britta's version.  And he says it's not a regional funny Wisconsin thing.

And one last thing: pronunciation.  Some people say it verbatim, others say "pro-noun-ciation".  Not a regional or national thing, I think.  Curious, all the same