Now that Dr. Dre is flirting with becoming the very first billionaire hip-hop has ever produced, it's time for rappers to turn their minds to the next goal—that's right, trillions. And as rappers are known for being ahead of the curve when talking about their money, we've already got a good collection of songs that reference the 12 zeroes that fall into that price range. Not surprisingly—with recycled or referential rhymes reaching as far back as the earliest hip-hop songs—much of the lyrical boasts stem from Kanye's "Swagger Like Us" opening line—"Mr. West is in the buildin'/Swagger on a hundred thousand trillion"—but we didn't let that count against anybody. On your marks, get set, brag. —Dan Rys