wibble
wibble [UK, perh. originally from the first "Roger Irrelevant" strip in "VIZ" comics, spread via "Your Sinclair magazine in the 1980s and early 1990s"]
1. n.,v. Commonly used to describe chatter, content-free remarks or other essentially meaningless contributions to threads in newsgroups. "Oh, rspence is wibbling again".
2. [UK IRC] An explicit on-line no-op equivalent to humma.
3. One of the preferred metasyntactic variables in the UK, forming a series with wobble, wubble, and flob (attributed to the hilarious historical comedy "Blackadder").
4. A pronounciation of the letters "www", as seen in URLs; i.e., www. foo.com may be pronounced "wibble dot foo dot com" (compare dub dub dub).

http://info.astrian.net/jargon/terms/w/wibble.html