B.K. Brown's back in the news – for her old bong antics!

Rumors have emerged that Bobbi Kristina Brown has been on a drinking and drug binge since her mother's death two months ago, including one in the National Enquirer about her taking bong rips at a party.

Well, now they're backing up their assertions with video evidence – and it looks pretty damning!

National Enquirer posted the video in its recently released Plus iPad app, and the video was mirrored by The Hollywood Gossip.

The video lacks sound for all but a moment, but Bobbi Kris can be heard coughing after inhaling the first time – right before she goes back to take another hit! (Attagurl!)

But how incriminating is this, really? Whitney Houston supposdly died with much more than just marijuana in her system – there were also benzodiazepines and cocaine. Until a video emerges of Bobbi Kris hitting a crack pipe, color us unimpressed.