Lily: Okay, I'm done. But I really don't want you reading this unless, you know, something happens. Can you swear to me you won't open it?
Marshall: Totally. What does it say?
Lily: Marshall, I'm serious.
Marshall: Okay. I promise I won't, I won't open that until you're dead.
Lily: Okay.
Future Ted: [v.o.] And through 22 wonderful years of marriage, Marshall kept his promise.
[A bald Marshall sits at a desk in the year 2029:]
Future Ted: Until November 1 of last year when, sadly... [Marshall opens the letter]
Lily: [v.o.] "Busted! I knew you'd read this. You suck, Marshall, you totally suck."
Marshall: That's it? I suck? Lily!
Lily: [enters] Yes, you suck. You said you wouldn't read it and you did.
Marshall: Well, you didn't keep your promise either. I don't see any dirty pictures in here.
Lily: Oh, fine, I'll take the dirty pictures.
Marshall: I don't want 'em now.
Lily: What is that supposed to mean?
Marshall: What?! Nothing. Nothing. You're beautiful. I would love the photos. Have I told you how beautiful you look?