Mac Lethal, born David McCleary Sheldon, became an internet sensation through his incredibly fast rapping and creative YouTube videos. He famously went viral in 2011 with a video of him rapping over Chris Brown's 'Look at Me Now' while making pancakes in his kitchen. Known for his technical skill and 'Alphabet Insanity' challenges, his image has become synonymous with lyrical dexterity and high-energy performance. In the meme world, he is often used to represent someone speaking or performing a task at an impossible speed, or to joke about the intense energy of underground hip-hop fans.