The 'Magnum Dong' meme stems from the Season 5 episode of It's Always Sunny in Philadelphia titled 'The D.E.N.N.I.S. System.' In this iconic scene, Frank Reynolds (played by Danny DeVito) attempts to pick up women by purposefully dropping a 'monster condom' from his wallet to signal his supposed prowess. His line, 'Oops, I dropped my monster condom that I use for my magnum dong,' paired with his alias Dr. Mantis Toboggan, became an internet sensation for its sheer absurdity and DeVito's signature delivery. The meme is typically used to satirize someone making an obvious, awkward attempt to show off or 'flex' their status, wealth, or physical attributes. It has since evolved into a versatile template for any situation involving a performative or exaggerated display of confidence.