Any congregation of two (or more) bums underneath a freeway overpass with excessive plant overgrow.
"On my walk to the park I narrowly escaped a Bum Jungle."
One whose asshole has far exceeded the regular hair to sphincter ratio. The enveloping pubic stingers accumulate to such an amount that it suiting to refer to them as a jungle.
"It won't come out, I've got a severe case of jungle bum"
A curious condition, brought on by binge drinking and severe dehydration (especially at baseball tournaments), where one's ass becomes a leaky, haemorrhoidal stinkhole.
Everybody! __________'s got Jungle Bum!
someone or something that lives in the jungle and is a bum
you slimy, slithering jungle bum