Blag
British SlangDefinition
Blag: to secure or achieve something by bluff, smooth talk, or trickery; to improvise it. Also, to carry out a robbery (often armed). As a noun: a scam or robbery.
Examples
"He managed to blag his way into the sold-out gig by chatting up the doorman."
"The projector packed in, so I had to blag the whole presentation on the fly."
"The papers called it a daring blag at the city bank."