A large moldy growth on the shaft of the penis which is of a greenish brown color. The dick will become encased in this fungus and will inevitably fall off.

"Oh man, Dr Pierson! Your penis just fell off due to your dick fungus! Why's it so green and moldy?!"
by Mondosaladlargelegshairears April 27, 2008
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A person with a penis that looks it has been left in the woods for 8 years, then sewn back on. They also have an absurdly large nose, almost too big for their head.
Lucas: did you see the fungus dick Jew last night?
by deicideDecoded October 8, 2016
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