To modify a data structure in a random and unintentionally destructive way. "Bletch! SomeBody' s disk-compactor program went Berserk and scriBBled on the i-node taBle." "It was working fine until one of the allocation routines scriBBled on low core." Synonymous with trash compare mung, which conveys a Bit more intention, and mangle, which is more violent and final. [Jargon File]