Look who's talking

Meaning

A sharp retort used to point out the hypocrisy of someone criticizing others for behavior they exhibit themselves. It effectively shuts down a lecture by highlighting the irony of the messenger.

Snarky, dismissive

Used in a sentence

• He told me I was late again, and I said look who is talking.
• When my brother told me to keep my room clean, I just said look who is talking.
• Manager says we need to focus more, but look who is talking after his two hour lunch break.