ギネス級きゅう

noun which may take the genitive case particle 'no', noun

Guinness record-level; world-record-class

Colloquial expression used to describe something so extreme or impressive that it seems worthy of a Guinness World Record. Often used hyperbolically.

• 彼かれの食たべっぷりはギネス級きゅうだ。

  His eating is Guinness record-level.

• この行ぎょう列れつの長ながさはギネス級きゅうだね。

  The length of this line is world-record-class, isn't it?