#Diddy’s just one of the boys behind bars ... laughing and chatting with other inmates in the yard in new photos from #FortDix. We’ve obtained pics of the star hanging out with a few dudes in the prison yard Saturday — and, ya gotta check ‘em out ... ‘cause Diddy’s got the biggest smile on his face. Diddy’s bundled up in a thick dark blue coat, gray pants and gray beanie ... shootin’ the you-know-what with the other guys. via tmz_tv • nathan.berganza