bumbler

n : someone who makes mistakes because of incompetence [syn: {bungler},

{blunderer}, {fumbler}, {sad sack}, {botcher}, {butcher},

{fuckup}]

burble

[Lewis Carroll's "Jabberwocky"] Like {flame}, but connotes

that the source is truly clueless and ineffectual (mere

flamers can be competent). A term of deep contempt. "There's

some guy on the phone burbling about how he got a DISK FULL

error and it's all our comm software's fault." This is

mainstream slang in some parts of England.

[{Jargon File}]