Which, in your opinion, are the most stylish, inventive, ironic and/or funny insults you've ever heard a "Friends" character wield?
One good candidate of mine would be a remark made by Jack Geller while he was arguing with Ross's English in-laws about the wedding party expenses: "...would be speaking German if it wasn't for us..." I laughed out loud when I heard that.
And what about that episode when Ross and Rachel kissed and made up at the beach, and then back in NYC they had this big row over the question "DOES IT?" ("IT SO DOES NOT!") And when Ross stormed out of Monica's apartment, Rachel yelled after him, "And it's not all right, it is not a common thing, and it does not happen to every man!!!"
Then there was that episode when Ross and Joey were dating the same woman. When the three of them sat down at the same table, the amount of dirty laundry the two friends rubbed on each other's faces was awesome. Although I don't remember the dialogue verbatim, if I recall correctly there were a couple of invaluable jewels tossed in the middle of that. I think I can remember a reference to Marcel the monkey, and something about Joey's VD ad, and so on.
And what about the mature, adult way in which Ross's College student girlfriend (Bruce Willis's daughter) said goodbye to him when he dumped her? "Hey Ross! You suck!" and then she attacked him with a water balloon. Okay, so that wasn't inventive or ironic, but tell me you didn't laugh at it.
Casually sarcastic remarks are also welcome, as long as they are intended to express derision, spite, anger, or any such nice feelings a self-respecting Jedi Knight should be immune to. There are a lot of "Chandlerisms" which could qualify for this category.