What does "you are one to talk" mean in friends S1E3?
Mr. Tribbiani: No, it's only been six years. I justwanted to put a nice memory in your head so you'd know that I wasn't alwayssuch a terrible guy. ...Joe. Y'ever been in love?
Joey : ...I d'know.
Mr. Tribbiani: Then y'haven't. You're burning yourtomatoes.
Joey : You're one to talk.

Question

What does "you are one to talk" mean in friends S1E3?
Mr. Tribbiani: No, it's only been six years. I justwanted to put a nice memory in your head so you'd know that I wasn't alwayssuch a terrible guy. ...Joe. Y'ever been in love? 
Joey : ...I d'know. 
Mr. Tribbiani: Then y'haven't. You're burning yourtomatoes. 
Joey : You're one to talk.

Answer

Best explained by an example.
Let's say you spend a lot of money on silly things. And you see that your friend has wasted his/her money on something silly. You say to your friend "What a waste of money!" And you friend replies " You are one to talk"
The expression does not apply only to money. It basically means that the person who is complaining does exactly what he/she is complaining about.

Answer

It means that this person most likely does what they are complaining about or arguing against.

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