Bobbi Kristina Brown's back in the news again -- for her old bong antics!

Rumors have emerged that Bobbi Kristina Brown has been on an alcohol-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.

Now it's backing those assertions with video evidence -- and it looks pretty damning!

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

The video lacks sound for all but a moment, but Bobbi Kristina Brown 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.

Concerned that Bobbi Kristina Brown may end up with the same fate as the late Whitney Houston, a few of her family members flew to Atlanta for an intervention this month -- but as with many, they couldn't seem to get through to Bobbi Kris. At least, that's what Star magazine is saying, according to Radar Online, its sibling website.

Bobbi Kristina's aunt Patricia apparently showed up with a few family members at the Atlanta house where Whitney lived and Bobbi Kristina is still staying and tried to perform an intervention, but despite quite a few tears shed by members of her family, Bobbi Kristina was not moved to action.

Everyone is worried sick about Krissy, a source told Star. Her aunt Pat got a number of her friends and family to come to Atlanta and have a serious talk with her about her sobriety, but to no avail.

The family even got Whitney Houston's longtime music industry friend Clive Davis to try to appeal to B.K.'s professional ambitions. Clive keeps telling Bobbi she needs to go to rehab, and that if she does, he'll help launch her music career, wrote Star.