Janet and John

イギリス英語

(UK) Childishly simple or obvious, resembling something found in a book for very young children.

日本語の意味

幼児向けの絵本のような、子供じみた単純さや明白さを持つ

The children's book had a Janet and John rhyme scheme that felt overly simplistic.

その絵本は児童書風の単純な韻律があり、あまりにも単純に感じられた。

意味（1）

(UK) Childishly simple or obvious, resembling something found in a book for very young children.

There is an instruction manual, but it's all very Janet and John.