"That Rug Really Tied the Room Together"

So I was explaining how I don’t eat meat on Fridays during lent and then the guy asked me if I was Jewish.

One of my favorite scenes in The Big Lebowski.
Walter Sobchak: I'm saying, I see what you're getting at, Dude, he kept the money. My point is, here we are, it's shabbas, the sabbath, which I'm allowed to break only if it's a matter of life or death...
The Dude: Will you come off it, Walter? You're not even fucking Jewish, man.
Walter Sobchak: What the fuck are you talkin' about?
The Dude: Man, you're fucking Polish Catholic...
Walter Sobchak: What the fuck are you talking about? I converted when I married Cynthia! Come on, Dude!
The Dude: Yeah, yeah, yeah, yeah...
Walter Sobchak: And you know this!
The Dude: Yeah, and five fucking years ago you were divorced.
Walter Sobchak: So what are you saying? When you get divorced you turn in your library card? You get a new license? You stop being Jewish?
The Dude: It's all a part of your sick Cynthia thing, man. Taking care of her fucking dog. Going to her fucking synagogue. You're living in the fucking past.
Walter Sobchak: Three thousand years of beautiful tradition, from Moses to Sandy Koufax...
[shouting]
Walter Sobchak: You're goddamn right I'm living in the fucking past!