Season 5, Episode 18: "The Raincoats"

How'd you come up with the idea for the beltless trench coat?

I came home one night

and I tripped over one of Jerry's toys.

So I took out my belt, just to threaten him.

And I got a glimpse of myself in the mirror.

How serendipitous.

So, that night, I cut off the loops,

and the Executive was born.