Barney used time travel as a pick up line and dresses up as old Barney to warn a girl she needs to sleep with present day Barney. So amazing, so Barney.

Rating: 5.0 / 5.0 (11 Votes)
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Show:
How I Met Your Mother
Episode:
How I Met Your Mother Season 4 Episode 4: "Intervention"
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How I Met Your Mother Season 4 Episode 4 Quotes

Robin: I'm moving to Japan. It took me a half hour to pack.
Lily: A half hour?
Robin: Well, it would have taken me 20 minutes, but a friend called me in tears

Barney [dressed in old man costume]: In a few minutes, the young me from your time is going to come through that door. Now, Cindy, I know this sounds insane, but in order to save the planet, you need to sleep with him tonight.
Cindy: What? I...
Barney: Sleep with Barney Stinson tonight, in whatever way he wants it, or he won't be able to find the solution to global warming that saves the human race