All answers so far have been about why you wouldn't want to... But to answer the original question,
This is how I would go about it:
Make a copy of your full website without a mobile version and publish this to a subfolder.
Then link the view full website button on the mobile version to this copy.
Making a copy of the site would certainly work but make sure that the search engines cannot crawl that version as duplicate content is a no-no when it comes to seo - do that by amending the robots.txt file.
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