What is Original Baby?
1.
The first child of young/teen parents that have a second baby on the way. Also, a way in which you can make someone's stupidity seem like movies, implying that the second baby is a sequel.
Dude, if they hadn't had that original baby-- their lives would have been so much better.
What the fuck do you mean original baby? Saying original baby implies that the second one is a sequel. Original baby? Original Batman.
See