The 'Casting Couch' meme features a specific black leather sofa, originally from a well-known adult film series. Over time, the image evolved into a 'those who know' internet trope, signifying a situation where an individual is under pressure or in a suspiciously informal interview setting. It is widely used to joke about the daunting nature of job applications, corporate onboarding, or any scenario where a person feels they are being 'tested' in a room that looks strangely familiar. The humor relies on the juxtaposition of the professional world with the infamous origin of the image, making it a staple of edgy internet humor.