lunatic|lunatics

这真是个疯狂的主意，把房子刷成荧光粉色。

That's a ___lunatic idea to paint the house neon pink.

公园里有一群疯子在追逐鸽子。

There were a bunch of ___lunatics chasing pigeons in the park.

只有疯子才会在暴风雨中出海。

Only a ___lunatic would go sailing in this storm.