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2.
To achieve, either spiritually or physically, a raging dancing boner due to highly stimulating activities or anticipation of such activities.

Usually accompanied by a one legged dance and a little song.
More often than not, a Jungle Boner is caused by Jungle Speed.
"Last night while watching Matlock I got a ragging Jungle Boner"
by The Real dRewsus June 16, 2009
 
1.
An STD caused by having intercourse in the jungle, specifically in a muddy or grassy area, that forms green vines wrapped around the penis.
Dude, that black girl was hot an all, but she gave me jungle boner.
by Bismo Funyuns October 02, 2013