smurf

smurf /smerf/ n.  [from the soc.motss newsgroup on
   Usenet, after some obnoxiously gooey cartoon characters] A
   newsgroup regular with a habitual style that is irreverent, silly,
   and cute.  Like many other hackish terms for people, this one
   may be praise or insult depending on who uses it.  In general,
   being referred to as a smurf is probably not going to make your day
   unless you've previously adopted the label yourself in a spirit of
   irony.  Compare {old fart}.