2) A condition brought about by having a myriad of different diseases and fungi on and within the dick. Imagine a jungle, a dark, damp, living, breathing environment rife with plants, fungus, cockroaches, parasites, germs, and bugs, all within its own little ecosystem. Now imagine that on your dick.
Aids, syphilis, and fungus combined = jungle dick.
2) Ben had sex with too many freshmen without using a rubber, now he has permanent jungle dick.