What was the most significant moment in the history of the 'Joey doesn't share food' phrase on Friends?

'Joey doesn't share food' is one of the most memorable lines from the hit television show Friends. The moment that this phrase is most often associated with is from the episode 'The One with Ross's Sandwich' in season 5.

In this episode, Joey is eating a sandwich that Ross made for himself, and when Ross asks for a bite, Joey responds with the now famous line 'Joey doesn't share food!'. This line has since become a cultural phenomenon, and is often used in reference to situations where someone is being greedy or not wanting to share.

While this episode is the most well-known instance of the phrase, it is not the first time that Joey uses it. In an earlier episode, 'The One with the Birth', Joey uses the line when he refuses to share his food with his pregnant sister's fiancé. The line is also used in a later episode, 'The One with Unagi', when Joey is protecting his food from Ross.