Do you say 'sandwich' or 'samwich'?

[Conchita]

An old English flatmate of mine used to say ‘samwich’. When I asked her if it was a regional thing, she replied that practically nobody says it the 'right' way. I hadn’t heard it pronounced like that again until today – in my morning class, one of the characters in the listening comprehension exercise we were doing said ‘samwich’.

Are you of those who use this 'familiar' term? If so, do people who say ‘sandwich’ sound too formal and unnatural to you?

[Mister Micawber]

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In my experience, 'samwich' is occasionally used jocularly, though the /d/ of 'sandwich' may be heavily reduced or elided, so that many of us pronounce it 'sanwich'.
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Native English teacher at Mister Micawber's

[Yankee]

I've always been under the impression that 'samwich' is much more often heard in British English. I agree with MM's take on American usage/pronunciation.