Charlie Sheen has revealed that a Mexican drug cartel "cut him off" from buying cocaine. "They had never seen someone acquiring that kind of weight," he explained, referring to the amount of cocaine he had requested. "The only other people that they were delivering that kind of weight to were dealers. Sheen has previously confessed to smoking "seven-gram rocks" of crack cocaine, joking that he was "going to need a bigger pipe". Sheen's confession comes after he opened up about his sobriety journey in his new memoir, The Book of Sheen, which he is promoting worldwide.