Seinfeldism 

Using a phrase that's been used on the TV show Seinfeld, or a phrase that's akin to one, eg: "What, you don't like Mabel's Bagels? But Mabel's Bagels are great! There are no bagels better than Mabel's Bagels!"

Every sentence uttered from her pretty little throat contained at least four Seinfeldisms.

Seinfeldism by Mosey July 22, 2004

Seinfeldian 

adj. Obvious or absurd, such that it is reminiscent of NBC's "Seinfeld."

Arguing about the relative size of marshmellows is undeniably Seinfeldian.

Seinfeldian by The Grammar Nazi July 11, 2002

Seinfeldesque 

When you get into the situation that leads you to remember a Seinfeld quote.

Guy 1: Haven't we had this conversation before?
Guy 2: You think?
Guy 1: I think we have.
Guy 2: Yeah, maybe we have.
Guy 1: Hey ... this is Seinfeldesque !!!

Seinfeldesque by rcjerez March 9, 2009

Seinfeldian 

You know you are a Seinfeldian if you argue over the top of a muffin, which marsmallow is bigger or something stupid like that.

Seinfeldian by Cool Guy July 18, 2003

Seinfeldien

In reference to a conversation or person who conversates about nothing. Just like on the show Seinfeld.

This is a very Seinfeldien subject, the examination of the quantum possibilties of a Pop-Tart.

He is a major Seinfeldien.

Seinfeldien by The Omnipotent Seal March 28, 2003

Seinfelditis 

A disease characterized by the constant mentioning of Seinfeld scenes after anything remotely similar occurs in the vicinity of the sufferer.

Mary's Seinfelditis rose to new heights when she was watching an episode of Friends and said, "Joey and Chandler remind me of Kramer."

Seinfelditis by Lisa J. Gunner January 25, 2009

Seinfelding 

When your group of friends have a conversation about useless aspects of modern society or over-analyze aspects of interactions with the opposite sex.

Dan: Then she told me to have a great weekend. Should I ask her out?
Jason: She's just being nice. She's a cashier.
Dan: There was a look.
Jason: Man, we're totally Seinfelding right now.

Seinfelding by docbuzzo June 6, 2016