one to talk

Noun

A person who hypocritically criticizes others for a fault that he/she also has.

Japanese Meaning

自分にも同じ欠点があるにもかかわらず、他人の欠点を偽善的に非難する人物

He's the last one to talk about punctuality, since he's always late.

彼はいつも遅刻するのだから、時間のことで他人を批判する資格はない。

Sense（1）

A person who hypocritically criticizes others for a fault that he/she also has.

ones to talk

（ plural ）