adj. Profoundly uninteresting or useless.
Other Forms
Finally, besides the obvious threat to public safety, the whole text-messaging thing strikes us as a WOMBAT (waste of money, brains and time).
—“Just what teen drivers need: text-messaging,” The Beaumont Enterprise, November 05, 2007
Trying to keep abreast of new terminology might seem, to use Silicon Valley lingo, to be WOMBAT duty — a waste of money, brains and time.
—Joseph Kahn, “Between Wall Street and Silicon Valley,a New Lexicon,” The New York Times, January 01, 2000
1990 (earliest)
WOMBAT [Waste Of Money, Brains and Time] adj. Applied to problems which are both profoundly UNINTERESTING in themselves and unlikely to benefit anyone interesting even if solved.
—Guy Steele, et al., “Jargon File,” MIT, June 12, 1990