[flashback to Ted and Victoria at the wedding:]
Ted: You know, there's one little flaw in our plan.
Victoria: What's that?
Ted: I'm gonna go home tonight with a lot of great memories and one really sucky memory: the memory of you walking out that door.
Victoria: Hey, Ted.
Ted: Yeah?
Victoria: Close your eyes, and count to five.
[Ted closes his eyes]
Ted: One, two, three, four, five.
[Ted opens his eyes to find Victoria gone]