Ploaf is a nonsense word used often as a synonym for excrement, but
may replace any word or part of speech. The term originated from a misunderstanding of a team name in the classic cross-platform
real-time strategy game, Myth, from Bungie Software. That team's name was "The Pimento Loafers", shortened as "ploaf" (from the 1999 Myth World
Cup on Macobserver.com). "Ploaf" is now most commonly used online since
2004 as part of a username (see the user profile for "ploafmaster" on RadioParadise.com from
2004).
Both of the cited uses of this word predate the older UD definition, as evidenced by the examples.