acronym. An unexplained problem that resolves itself over time. [From the phrase just one of those things.]

Example Citation:
JOOTT: Just One Of Those Things. A gremlin that fixes itself. As in "I came in yesterday morning and the computer booted up fine, JOOTT. "
—Stephen Lynch, "It's all geek to me," Orange County Register, October 20, 1995

Earliest Citation:
In the case of punt returns it seems to be JOOTT: Just One Of Those Things, the cyclical theory that adapts to most any trend.
—Greg Cote, "Return of returns returns thrills," The Miami Herald, October 28, 1994