The Jargon File (version 4.4.7, 29 Dec 2003):

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.

    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 pronunciation 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).