frogging

frogging [University of Waterloo] v.  1. Partial corruption
   of a text file or input stream by some bug or consistent glitch, as
   opposed to random events like line noise or media failures.  Might
   occur, for example, if one bit of each incoming character on a tty
   were stuck, so that some characters were correct and others were
   not.  See {terminak} for a historical example.  2. By extension,
   accidental display of text in a mode where the output device emits
   special symbols or mnemonics rather than conventional ASCII.  This
   often happens, for example, when using a terminal or comm program
   on a device like an IBM PC with a special `high-half' character set
   and with the bit-parity assumption wrong.  A hacker sufficiently
   familiar with ASCII bit patterns might be able to read the display
   anyway.