Season 9, Episode 15: "The Wizard"

George, listen to me. I have a very important job for you.

I want you to come by twice a day...

...and flush the toilet so the gaskets don't dry out and leak.

-What? -Well, what about the mail?

This is far more important.

You must exercise the gaskets, George.

All right, Jerry, I'll do it. See you.

So, ran into the Rosses again.