The "feud" between 50 Cent and Floyd Mayweather a couple weeks back got us thinking about the long-standing love affair between rappers and boxers. Both require a tremendous amount of skill, and both camps have made sincere, desperate, and hilarious attempts at paying homage to one another. Boxers have made their attempts at rap (Roy Jones Jr.'s "Y'all Must Have Forgot," Mayweather's "Yep"), and rappers thrown some punches (Cassidy challenging pretty much any rapper to a boxing match - not to be confused with him accepting Meek Mill's challenge to a rap battle), in the hopes that the hilarity will come off as an homage. We came up with over a dozen boxing references in rap, ranging from obscure to full-on ridiculous. Take a gander.