Lily: I don't think we can live here, Marshall. I don't know what we're gonna do.
Robin: Marshall? Open the door. [gets up and grabs skateboard] If I make it through the door, that's five points. Woo-hoo! [o.s.] Five points.
Lily: Ten bucks says I can do it backwards.
Future Ted: [v.o.] So Lily and Marshall decided to make the best of a bad situation. And that's also how the sport of Apartment Roller Luge was invented.