sigmonster

   [common]  A  beast  that  randomly  chooses  one  of  a  selection of
   signatures  for  appending to mail and news messages. The creature is
   most  often  mentioned directly when it has been in particularly good
   form  and  selected  a  signature  appropriate  to  the  topic  being
   discussed; the construction "P.S.: good sigmonster, have a cookie" is
   not  uncommon.  While  the are sigmonster programs floating around on
   the  net, most hackers who keep one use a silly little Perl or Python
   script  that they threw together in the middle of the night under the
   influence of far too much caffeine.

[glossary]