David Andrew Burd (born March 15, 1988), better known by his stage name Lil Dicky or LD, is an American rapper and comedian. He came to prominence with the release of the music video of his song "Ex-Boyfriend", which went viral with more than one million views on YouTube in 24 hours. He released his debut album Professional Rapper on July 31, 2015. In 2018, his song "Freaky Friday", featuring Chris Brown, became a worldwide hit.

Burd grew up in an upper-middle-class Jewish family in the Elkins Park neighborhood of Cheltenham Township, on the north border of Philadelphia. He attended Cheltenham High School. Speaking about his time in high school, Burd said "I was a pussy. I was really awkward looking. I wasn’t getting any girls at all, but I was very class-clownish and I got good grades.” After graduating from high school, Burd began attending the University of Richmond, where fellow 2016 XXL Freshman and rapper Dave East also attended at the same time. Burd graduated summa cum laude in 2010. He then relocated to San Francisco, California, where he worked in account management at the advertising agency Goodby, Silverstein & Partners. After reimagining his monthly progress report as a rap video, the company brought him to work in their creative department, where he wrote copy for ads such as the NBA's "BIG" campaign.