--"They were condemned to die by snu-snu!"
a common form of punishment performed by future amazonian women. The word "snu snu" is technically translated as "sex", which may seem as an extremely convenient disciplinary technique for condemned men, however the punishment "advisers" are always very large women usually resulting in crushed pelvises. The punishment is pleasurable yet devastating to men, ending in a series of excited to frightened facial expressions shortly after they are condemned.
This act's resources were found from the Futurama episode "Amazonian women in the mood". This is the first episode of season 3.
The original use for death by snu snu was suffering from a worse version of the option you tried to avoid.
Two men were trapped on an island of savages. The chief gives them a choice. You may undergo "snu snu" or you may die. The first man chooses snu snu. A large savage takes him and rapes him violently. Afterwards, the man is free to go. The second man decides he'll take death. The chief smiles and yells out "death by snu snu!"