MrBeast Rap, also called the MrLean Song, is the name for a rap track and music video in which YouTuber Jimmy Donaldson raps as Hood MrBeast, a bejeweled, cash-flashing alter ego better known online as MrLean3. The verse sits on top of Lil Baby's "Dead Fresh," with MrBeast trading bars about his wealth and his large-scale philanthropy projects rather than the usual rap boasts3.

The bit works because MrLean is already a running joke on TikTok. Since early 2026, users had been posting exaggerated edits of MrBeast styled as a stereotypical rapper, draped in chains and fanning stacks of bills3. When Donaldson leaned into the character himself on a real rap song, the meme flipped from a fan-made caricature into something the subject was now performing straight to camera, which is what sent the clip and follow-up reactions across TikTok in the days after.

Most MrLean posts fall into three buckets: reactions to the original MrBeast and Lil Baby video, edits that recut the verse over new visuals, and FL Studio-style remixes of the beat. Creators typically play up the contrast between MrBeast's clean-cut YouTube image and the chains-and-cash rapper caricature, often quoting the philanthropy-themed bars over unrelated footage.