The Gandalf Sax meme features a looped clip of Gandalf the Grey from The Lord of the Rings nodding his head in rhythm to the catchy tune of 'Run Away' by SunStroke Project (the Epic Sax Guy song). This mashup first gained massive popularity on YouTube in the early 2010s, often appearing in '10-hour version' endurance videos that challenged viewers' patience. The meme is primarily used to represent being hypnotized by repetitive content, pure unadulterated joy, or the weirdly satisfying crossover between high fantasy and modern dance music. It remains a staple of internet culture for its infectious energy and nostalgic charm.