A byproduct of being in perilous circumstances and also being kinda turned on by said fact.
Dude, I just swam with a tiger shark and, damn, I got a huge danger boner.
by dangerbonerking August 28, 2010
Anticipation for rush of adrenaline and excitement from participating in risky behavior, not a literal boner.
Jenny love's skydiving for both the adrenaline rush and the huge danger boner before the jump.
by DaveCorpUSA July 14, 2014