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.
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Episode Details: How I Met Your Mother Season 4 Episode 7
| Title | Not a Father's Day |
| Episode | 7 |
| Season | 4 |
| Release | November 10, 2008 |
| Overview | 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. |
| Rating | 7.2 |
| Vote Count | 22 |
