Locke is a contact and mission giver in Payday 2, the cooperative first-person heist game developed by Overkill Software, known for his dry humour and streetwise attitude. His yeah fo sho line captures that personality in just a few words, which is why players began clipping it and sharing it beyond the game itself. It has since become a small in-joke among Payday fans, used online as a laid-back way to agree, hype up a plan or react to something cool without needing any extra context.