It is my humble opinion that food should never be used as a weapon. It should only hurt us if we accidentally eat too much because it is so yummy and irresistible.
These are durian. Most westerners do not eat them because they can’t get beyond the way they smell. Putrid. In fact, you are not allowed to carry them on the bus with you as the smell disturbs other passengers. They, if eaten, actually quite sweet I am told. Personally, I have yet to eat durian the fruit, although I do like durian flavored cookies (without smell of course).
The fruit, however, does have a darker usage. Aparently, they are used to punish children. You may not be able to tell from the picture, but they are actually quite large, about the size of someone’s head. Teachers have been know to place a durian in the corner and force a misbehaving child to knell on it as punishment. The spikes are quite sharp and will cut the child.
The punishment is akin to old-school catholic nuns rasping the knuckles of a child with a ruler. Only, in this case, I am afraid the child might get a pavlovian response to hate fruit.