Three men were shipwrecked on a desert island and where captured by the local natives. They were brought to the chief native.
The chief gave the men two choices; they could have death or submit to unga bunga.
The first man decides he does not want to die, so he chooses unga bunga.
Ten of the natives took him into the woods, when he came back one hour later he was all beaten up.
The second man chooses unga bunga and he was taken out the woods for 2 hours where the natives beat him up.
The third man not wanting to go through all that torture decided upon death.
So the chief said ok death by Unga Bunga.