Serenity Now Seinfeld T-Shirt

In the Seinfeld season 9 episode titled “The Serenity Now”, Frank Costanza (George’s father, played by Jerry Stiller) is told by a self-help recording to say “Serenity now!” whenever he feels stressed, as a way to calm himself. Instead of saying it in a soothing manner, Frank shouts it angrily at the top of his lungs. George Costanza also starts saying "Serenity now", but leans that serenity now means insanity later.

Seinfeld is one of the most popular sitcoms of all time, and everyone will know you are a fan when you wear this Serenity Now Seinfeld T-Shirt!