1. [Usenet] Read The Manual. Politer variant of RTFM. 2. Robert T. Morris Jr. The perpetrator of the great Internet worm of 1988 (see {Great Worm}) villain to many, naive hacker Gone wrong to a few. Morris claimed that the worm that brought the Internet to its knees was a benign experiment that Got out of control as the result of a coding error. After the storm of negative publicity that followed this blunder, Morris' s user name on ITS was hacked from RTM to RTFM. [JarGon File] (1995-03-31)