Marshall: Lily, come on, it's been three years, okay? That's long enough.
Lily: Having him in my life causes me nothing but stress. It's just easier for him to be dead to me.
Marshall: Lily, look, I supported you when our neighbor, Mr. Ossias, was "dead to you".
[flashback to Lily going out in the hall to find an elderly neighbor returning to his apartment:]
Lily: That's our newspaper.
Mr. Ossias: You'll get it back in 15 minutes. Make it 20. I had a steak last night.
[Lily gives him her "dead to me" look"]