Kanye, we're gonna let you finish in a minute, but ... oh never mind, go ahead and open mouth, insert foot again. The rapper went on one of his signature and petulant rants at a concert in London last night, reports TMZ, slamming everything from "business people" to the music industry and the Grammys. After repeatedly chanting "remind me again why we're in this sh**," he then took on an unlikely and even more petulant target: Jay-Z's latest song with Justin Timberlake. "I got love for Hov," Kanye said, "but I ain't f**king with that 'Suit & Tie.'" Jay-Z famously ribbed West over the Taylor Swift incident.