A joke that is not at all funny and usually contains a reference to inside jokes shared only among his/her family or references to biblical figures.
(Playing baseball)

Batter: Toss me a seed (pitch to hit)

Pitcher: Yeah, if he throws you a seed, a bird will fly across the plate and Drew will hit the bird with the bat HAHAHAHAHAHHAHAHAHAHAHAHAAH.

Catcher: That was a complete Fish joke.
by Bary Bonds May 26, 2009
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