= D =
dancing frog n.
[Vancouver area] A problem that occurs
on a computer that will not reappear while anyone else is watching.
From the classic Warner Brothers cartoon "One Froggy
Evening", featuring a dancing and singing Michigan J. Frog that
just croaks when anyone else is around (now the WB network
--The Jargon File version 4.3.1, ed. ESR, autonoded by rescdsk.