Mistah FAB, who's been a better community advocate than rapper in recent years, is parking the yellow bus at 45th and Market streets this afternoon to begin his Thanksgiving food drive. As SF Weekly reminds us, he's be holding the fourth annual neighborhood event from 1-6 p.m. today. In addition to the dozens of turkeys that they deliver to needy families, there'll be food, clothes, and a mobile health clinic administering AIDS tests for free. FAB has thrown in thousands of his own dollars, and is still welcoming donations via Paypal, to email@example.com. Follow @MistahFAB for updates.