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The Mermaid Theory

"The Mermaid Theory"
How I Met Your Mother episode
Episode no. Season 6
Episode 11
Directed by Pamela Fryman
Written by Robia Rashid
Production code 6ALH11
Original air date December 6, 2010 (2010-12-06)
Guest appearance(s)

Jennifer Morrison (Zoey Pierson)
Kyle MacLachlan (George "The Captain" Van Smoot)
Tamara Lynn Davis (Iris)

Season 6 episodes

Jennifer Morrison (Zoey Pierson)
Kyle MacLachlan (George "The Captain" Van Smoot)
Tamara Lynn Davis (Iris)

"The Mermaid Theory" is the 11th episode of the sixth season of the CBS sitcom How I Met Your Mother, and the 123rd episode overall. It aired on December 6, 2010. The Episode hints at future events, which are elaborated in Season 7 episode "Now We're Even".

Ted tells the group Zoey has invited them to an art gala, though only Ted expresses interest. Lily cautions Ted on hanging out alone with a married woman. Ted dismisses Lily’s concerns but when out with Zoey she tells her husband, ‘the Captain’, that she is “out with friends” instead of specifically mentioning Ted causing him to become concerned.

In an attempt to straiten things out Ted agrees to spend an evening with ‘the Captain’ and Zoey on their boat, but on arrival Zoey is ill requiring Ted to spend the evening alone with ‘the Captain’. Ted suspects the Captain knows he’s been hanging out with Zoey and fears he will be murdered. When Ted prepares to escape the boat hits a bump and Ted falls in the water. After being brought back on the boat Ted admits his fears, ‘the Captain’ tells him he’s glad Zoey has found a new friend and they agree to be friends. Ted and Zoey met up later and both agree that they should cease hanging out if either begins to develop feelings for the other.

During these events Marshall and Robin have dinner together having realised that they’ve never really spent much time alone. The dinner is initially awkward until Marshall reveals that the reason he doesn’t spend much time alone with Robin is due to Barney’s ‘Mermaid Theory’, that the longer you spend with someone the more likely you will want to sleep with them. Barney claimed the theory comes from the fact that sailors used to picture manatees as mermaids due to long periods without female contact. Marshall and Robin both get drunk and enjoy the evening though when they return to the apartment, Marshall begins seeing Robin as a mermaid. When she throws up all over the floor, however, Marshall once again sees her as a manatee, much to his relief.


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