Future Ted: [v.o.] Your Uncle Barney was always a bit of an enigma. In all the years we lived in New York, none of us had ever set foot in his apartment. Until one day, one of us did.
[Barney wakes up with Lily in his bed]
Barney: [screams]
Lily: [screams]
Future Ted: It's a pretty good story. And believe it or not, alcohol did not play a role. It all started two weeks earlier at Lily's housewarming.