Characters
I was 8 days old and still living with my parents. How sad is that? Clearly, it was time to move on.
— Megamind ‧ Megamind

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The speaker jokes that at eight days old they were still living with their parents and found this pitiful. Treating it as an embarrassing failure to launch, they conclude it was obviously time to leave. The humour lies in applying adult standards of independence to a newborn's timeline.
Context reviewed