I converted when I married Cynthia.
4 seconds sound clip from the The Big Lebowski movie soundboard.
You can hear this line at 01:36:23 in the Blu-ray version of the movie.
Quote context
[...]
- Will you come off it, Walter? You're not even fucking Jewish, man.
- What the fuck are you talking about? (6)
- Man, you're fucking Polish Catholic!
- What the fuck are you talking about? (7)
- I converted when I married Cynthia.
- And five fucking years ago, you were divorced.
[...]