When Joey showed that he can also have the skills of being sarcastic like other characters of friends.
Chandler: Come on, Ross? Remember back in college, when he fell in love with Carol and bought her that ridiculously expensive crystal duck?
Rachel: What did you just say?
Chandler: ahem… um… Crystal duck.
Rachel: No, no, no… the, um, the… ‘love’ part?
Chandler: F-hah… flennin…
Rachel: Oh… my God.
Chandler: [rubbing his temples] Oh, no no no no no…
Joey: That’s good, just keep rubbing your head. That’ll turn back time.
When Ross faced the bitter truth 😀
Rachel- He was never good at the flirting.
Ross- What are you talking about? It worked with you.
Rachel- We met, you flirted and then bam! Nine Years later, you had me.
When phoebe made a sarcastic comment on the King of Sarcasm. 😀