How I Met Your Mother (2005–2014)
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Not a Father's Day 

While Barney celebrates a pregnancy false alarm, Marshall and Lily try to figure out if it's time to have a baby.



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Episode cast overview:
Michael Hagiwara ...
Elena K. Smith ...
Ted's Cousin
Lori (as Daniele Watts)


Barney is told by one of his sexual conquests that she may be pregnant with his baby. When Barney learns that she isn't pregnant, he celebrates by creating what he hopes will be a new national holiday: Not a Father's Day. Ted and Robin try to open Barney's eyes to who are not fathers. Meanwhile, Marshall and Lily are contemplating having a baby. When Marshall has to skip a planned baby making session due to a work meeting, Lily begins to wonder if she and Marshall really are ready to be parents. She calls in Robin and Ted for their advice, they who are on opposing sides of the issue. As Robin and Ted debate the general issues of parenthood, Lily, with the assistance of a bottle of wine, goes to Marshall's office invading his meeting to tell him her decision in only the way a drunken wannabe mom can. Written by Huggo

Plot Summary | Plot Synopsis


Comedy | Romance





Release Date:

10 November 2008 (USA)  »

Company Credits

Show detailed on  »

Technical Specs


Sound Mix:


Aspect Ratio:

1.78 : 1
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Did You Know?


The degree on the wall in Marshall's office is from Ohio Wesleyan University. Marshall, however, attended Wesleyan University in Connecticut. See more »


Robin states "I have a permit for that" for the handgun in her purse. Private citizens in New York City cannot get "carry permits" for handguns. See more »


Lily Aldrin: Ted, you may be single and childless, but you're totally a dorky dad.
Ted Mosby: I don't think I like your tone, young lady.
[Lily shrinks, as if she is the daughter]
See more »


References Star Wars: Episode IV - A New Hope (1977) See more »


Hey Beautiful
Written by The Solids
Performed by The Solids
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User Reviews

Neil Patrick Harris Take A Bow Sir
23 December 2014 | by (United Kingdom) – See all my reviews

A great episode that features the brilliantly Neil Patrick Harris as Barney Stinson in its main storyline.

Plot In A Paragraph: While Barney celebrates a pregnancy false alarm by creating a holiday called 'Not A Father's Day' Marshall and Lily come down with baby fever and they try to decide if they should have a baby. The fact that Robins has a fear of children is revealed.

Once again Neil Patrick Harris totally knocks it out of the park (as he always does) as Barney Stinson. Whenever their is a brilliant episode of "How I Met Your Mother" Neil Patrick Harris is front and centre of the plot. Barney is easily my favourite character in this show and it's mainly due to Neil Patrick Harris's performance being so charming!! In a role that could be sleazy and creepy, he is charming and engaging.

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