Hey, so remember how Grammy-winning rapper 2 Chainz was robbed at gunpoint in SOMA on Sunday, hours before going onstage at KMEL Summer Jam? Yeah, it really happened. And now, TMZ has posted a nutso video -- two nutso videos, actually -- of the deed going down in the 800 block of Howard Street. It shows Tauheed Epps cruising with his entourage when a gunman appears off the street, scattering the crew and sending 2 Chainz running away. This is how ugly crime really is, kids.