Season 2, Episode 5: "The Apartment"

-Yeah, the guy with the flat head. -He's a cube.

Anyway, he got married about six months ago.

Ever since he's worn a wedding band...

...women have been coming on to him everywhere.

-I've heard that about wedding bands. -I wonder if that's really true.

That'd be an interesting sociological experiment.

You know, Kramer has his father's band. He'd loan it to you.