Thanks for the link, McGrath.
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If offers this:

blag: v wheedle; bluff; wangle: "I managed to blag a ride to work." Or: "I had no idea what I was talking about but I think I managed to blag it."
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Now, is there really a slang word 'wangle'? Because I would say 'wrangle,' a word which may be derived from horse-handling.

My husband was just lamenting that his Wrangler jeans are wearing out.