Jerry Stiller: "You Want a Piece of Me?" the video clip

ooops! wrong link from source; still funny but not Stiller

correct link: https://youtu.be/QpJf_WisuR0?t=19

the blooper outtake from this scene
Julia Louis-Dreyfus can't stop cracking up at Jerry Stiller
https://youtu.be/L2LdHH0hmHY

That's some classic stuff. One of my favorite Seinfeld scenes ever but I never saw the bloopers before. Hilarious.

I still remember the bloopers from the end of season look back they did. The reruns on TBS help. All classic.