Chris Brown back on Twitter, more idiocy sure to follow

Chris Brown's Twitter account is active again, but right now it's just a blank page stating "@chrisbrown hasn't tweeted yet."

Oh, if only...

The controversy-prone singer/dancer/actor abruptly deleted his account a week ago after a disgusting and immature exchange with comedian Jenny Johnson. But he hasn't been entirely absent from social media since then.

During the week his former -- and apparently current -- girlfriend Rihanna tweeted photos of the couple together, and today Brown posted a photo of himself and a scantily-clad Rihanna on Instagram.

As you may recall, Brown was arrested in 2009 for physically assaulting Rihanna.