How I Met Your Mother
Mark Episode As Watched

SEASON 4 • EPISODE 21

How I Met Your Mother

"The Three Days Rule"

Original Air Date:

How I Met Your Mother S4E21
Avg Rating (0)
Your Rating
When Ted violates the 'three days rule' by continually texting with a girl he's just met, Barney and Marshall retaliate by impersonating her.
Buy or StreamAmazonAmazon UK