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How I Met Your Mother S4E21 — The Three Days Rule
8.6
How I Met Your Mother•Season 4•Episode 21

The Three Days Rule

8.6/10 · 4,601 votesApr 27, 200923 min

Ranked #3 of 24 in Season 4•+0.5 vs season avg

Discussion

Ted breaks one of Barney and Marshall's relationship rules, texting a woman he recently met, so the pair play a joke on Ted by pretending to be the woman.

Directed byPamela Fryman
Written byGreg Malins
Previous episodeE20 · Mosbius DesignsNext episodeE22 · Right Place, Right Time
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Season 4 Episodes24

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Old King Clancy stillE18 7.4

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Murtaugh stillE19 8.2

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Cast5

Josh Radnor

Josh Radnor

Ted Mosby

Neil Patrick Harris

Neil Patrick Harris

Barney Stinson

Jason Segel

Jason Segel

Marshall Eriksen

Alyson Hannigan

Alyson Hannigan

Lily Aldrin

Cobie Smulders

Cobie Smulders

Robin Scherbatsky

Crew3

Greg Malins

Greg Malins

Executive Producer

Greg Malins

Greg Malins

Writer

Pamela Fryman

Pamela Fryman

Director

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Episode Summary

"The Three Days Rule" is episode 21 of How I Met Your Mother season 4. It scored 8.6/10 from 4,601 votes, ranking #3 of 24 episodes this season (season average 8.1). Directed by Pamela Fryman and written by Greg Malins, it aired on April 27, 2009.

Next: E22 · Right Place, Right TimeBest of Season 4