Barney creates a holiday to celebrate not being a father. Meanwhile, Lily and Marshall are considering having a baby, but Lily first wants advice from Ted and Robin.
| Title | Not a Father's Day |
|---|---|
| Genres | Comedy |
| Release Date | 2008-11-10 |
| Episode Runtime | 00 Hours 22 Minutes |
| Season Number | 4 |
| Episode Number | 7 |
| Production Companies | Carter Bays, 20th Century Fox Television |
