scrog

[Cf. Scrag, or Gael. sgrogag anything shriveled, from sgrog to compress, shrivel.]
A stunted shrub, bush, or branch. [Prov. Eng. & Scot.]

[Bell Labs] To damage, trash, or corrupt a data structure. “The list header got scrogged.” Also reported as skrog, and ascribed to the comic strip The Wizard of Id. Compare scag; possibly the two are related. Equivalent to scribble or mangle.