The line "You are already dead" is the catchphrase of Kenshiro, the protagonist of Fist of the North Star manga series in which he says it before finishing off an enemy.
Maila nkokonono tshipi e bo gale notwane, ke ra wena "mmina tlou" ... seepa tshoga ya lebowa asa e epele go eja eupsa a e epela go e bapadisha