Seinfeld Quiz: The Practically Impossible Who Said It - Jerry Seinfeld Or Cosmo Kramer?

Seinfeld Kramer Jerry
NBC

8. Oh, Understudies Are A Very Shifty Bunch. The Substitute Teachers Of The Theater World.

Jerry Seinfeld

Cosmo Kramer
Contributor

Jen Gallie hasn't written a bio just yet, but if they had... it would appear here.