Marshall and Lily and Robin and Kevin having been double dating. Robin and Kevin have had to endure watching Marshall and Lily fight all the time, while they say that they don't fight. Regardless, Kevin decides that he wants to move to the next step with Robin: he asks her to marry him. After thinking about the proposal, Robin thinks she knows how she will answer, but first she needs to clear the air which may change the picture entirely. Meanwhile, despite Barney having a sure thing, he acts as wing man for Ted. Quinn, the wing girl of Ted's prey for the evening, ends up being wise to Barney's manipulative ways. For missing out on his sure thing, Barney believes that Ted owes him one. What Barney wants as his payment, after hearing about it from Marshall and Lily, is for him and Ted to take the "drunk train" i.e. the last train out to Long Island where everyone inebriated is willing to go to bed with anyone else on board. The drunk train experience doesn't end up being what either ... Written by
Did You Know?
This episode marks Alysson Hannigan's 148th appearance as Lily Aldrin, exceeding her 147 episodes as Willow on Buffy/Angel. See more
When Barney and Ted are on the "drunk train," Barney 's jacket gets torn at the seam of his shoulder by a girl. Later when Ted and Barney walk in to Lily and Marshall 's place his sleeve is no longer torn. See more
[Kevin has just proposed to Robin, who's still unsure of an engagement
Haven't you always wanted kids?
That was before I fell in love with you.
That's the thing! Your future always had kids in it, something huge you would be giving up for me. I just don't think I could ever owe someone that much. I'm just scared that you'll wake up in a year, or ten, or 50, so I need you to be sure, okay? If we get married, we will never have children. Are you really okay with that?
Rivers and roads
Performed by The Head and the Heart See more