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]