Dead Assmar Share definition Flag Completely serious. The same as "dead ass," but used by high school students to reference "Lord of the Flies." Samneric:"Where's Piggy?"Ralph: "Roger just crushed him with a boulder..."Samneric: "Dead assmar?" Dead Assmar by Not Josh A March 22, 2010 0 0 Get merch Get the Dead Assmar mug. Buy Now — $32.95 See more merch