These people have played out Seinfeld moments in real life.
Were the other characters in Seinfeld based on real people, or were they completely fictional aside from Jerry? - Quora
Lauren Hansen
Seinfeld: Episodes Based On Real Events
The Mary Sue - The Nexus of Pop Culture and the Uncharted Universe
10 Seinfeld Characters And Their Real-Life Counterparts
Seinfeld (season 5) - Wikipedia
Seinfeld' Ended 25 Years Ago. Its View of Adulthood Endures. - The New York Times
TV Characters Inspired By Real Life People
7 Seinfeld Plots That Happened in Real Life