Kevin Federline is old news, even if the Britney Spears mooch-a-holic continues to self-promote his impending hip hop career. The new kid on the block? Patrick Swayze, who, according to AllHipHop.com, is planning to release a rap single sometime next year. The 53-year-old actor (?) had one chart-topping hit in the late 80’s, thanks mostly to the success of “Dirty Dancing,” but seriously, who’s going to break the news that old white dudes can’t rap. Hey Patrick, you’re free to borrow my copy of “White Men Can’t Jump.” I know it’s not the same, but you’ll get the idea…