Season 9, Episode 3: "The Serenity Now"

What happened to you, pal?

Joey Zanfino and some of the neighborhood kids...

...they ambushed me with a box of Grade A's.

-Are you all right? -Oh, no, I'm fine. Fine. Serenity now.

Serenity now. Serenity now.

So you're using Frank's relaxation method?

Jerry, the anger, it just melts right off. Serenity now.