Paul Wernick is a Canadian screenwriter and producer best known for writing screenplays for the Zombieland and Deadpool films with his creative partner Rhett Reese.
Description above from the Wikipedia article Paul Wernick, licensed under CC-BY-SA, full list of contributors on Wikipedia.
After a single, career-minded woman is left on her own to give birth to the child of a married man, she finds a new romantic chance in a cab driver. Meanwhile, the point-of-view of the newborn boy is narrated through voice-over.