How I Met Your Mother S06E11:

The Mermaid Theory

IMDb 8.4 22 min/episodeRelease:2005
Ted goes on a boating trip with Zoey's husband, "The Captain." Menawhile, Barney's "Mermaid Theory" prevents Marshal from having a nice dinner with Robin, and the narrator tries to recall the details of a fight between Lily and Barney.
Genre: Comedy - Romance