I think mines is all down to my West of Scotland/Glaswegian accent ... I hate how scummy I sound when I'm around people who aren't local!
Some slang also really gets to me - my oh once called "windows" "windaes" (pronounced like "windy" as in windy day with an s ...) aaaargh! And he called "snow" "snaw" to rhyme with thaw ... We had words.
And as for pp who says draw rhymes with door - I don't get how that's possible lol. I have tried but my mouth can't even form the word if that makes sense?
... At least I can say loch properly though

seems to be the only word I can probounce correctly!