09/09/29 04:49:49.37 /2foVapc
原文はこれかな？なんか本国でも議論されてるようだ
A dragon and knight live on an island, which has seven poisoned wells,
numbered one through seven.
If you drink from a well you can only save yourself by drinking from a higher numbered well.
Well number seven is located at the top of a high mountain,
so only the dragon can reach it.
They decide the island isnt big enough and they have a duel.
Each of them brings a glass of water to the duel, they
exchange glasses and drink. After the duel, the knight lives and the dragon dies. Why?