The 'Yeeeeessssssss' meme originates from the hit sitcom 'It's Always Sunny in Philadelphia' during the 2013 episode 'The Gang Spies Like U.S.' (Season 9). In this scene, characters Mac (Rob McElhenney) and Dennis (Glenn Howerton) visit a store where they are greeted by an eccentric, flamboyant clerk played by actor Brian Huskey. Every time they ask a question, the clerk responds with an absurdly drawn-out, high-pitched 'Yeeeeessssssss' that is both hilarious and deeply unsettling. This clip has become a staple of internet culture, used to represent moments of forced politeness, over-the-top enthusiasm, or creepy agreement. It captures the energy of someone trying to be 'extra' in a professional setting or simply someone who is being incredibly weird for no reason. People use it to react to situations where they are overly eager to say yes to something indulgent. Example caption ideas include: 'When the waiter asks if I want to see the dessert menu' and 'Me pretending to be normal at a job interview.'