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Opposite to a private joke, a joke which anyone can join in with at any time. However, because of the possible scale of an open joke, it is much easier to kill and gets old much faster than a private joke.

Due to the nature of an open joke, specific times, people or places are usually not crucial to its execution.
Guy #1: Do you think anyone gets these references?
Guy #2: Not as far as I know. Sometimes I think it would be funnier to use an open joke here, then everyone could join in.
Guy #1: Yeah, but I find this funnier.
Steve: ...
by Oletha March 29, 2010