Estelle Costanza saying "Chinese food!" in a poor Chinese accent in the episode "The Junk Mail".

Chinese Food

Kramer saying "Death Blow" from the episode "The Little Kicks".

Death Blow

Frank Costanza yelling "Serenity Now!" from the episode "The Serenity Now".

George saying "Moops" from the episode "The Bubble Boy".

Newman saying "Jambalaya" from the episode "The Soup Nazi".

Mr. Kruger saying "K Uger", like one of them old car horns.

Phil Rizzuto keychain saying "Holy Cow!" from the episode "The Pothole".

George and Jerry simultaneously saying "Tryptophan" from the episode "The Merv Griffin Show".

Jerry asking "who is this?" from the episode "The Nap".

Mr. Kruger saying "Koko the Monkey" from the episode "The Maid".

Puddy saying "Feels like an Arby's night" from the episode "The Burning".