Jerry Stiller On HOW He BECAME "Frank Costanza", AND His FUNNIEST MOMENTS!

The late Jerry Stiller was AMAZING as "Frank Costanza" on the TV Show "Seinfeld"...

But HOW DID Jerry become "Frank"?

In his own words...

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Here Are Some Of "Frank's Funniest Moments" On The Show...

And...A CLASSIC BLOOPER That Jerry Was A Part Of...