Chris Brown unleashed a tirade on Twitter over the weekend after he couldn't find his new album, 'Graffiti,' on the shelves at a New England Walmart. He said big retail chains are "blackballing" him and "lying to customers."

"im tired of this s--t," he wrote at noon on Dec. 11. "major stores r blackballing my cd. not stockin the shelves and lying to costumers. what the f--k do i gotta do."

He quickly added, noting that his words would certainly be publicized and used against him: "yeah i said it and i aint retracting s--t. im not biting my tongue about s else..."