An adjective used to describe a person who is mentally underdeveloped. Additionally can be used to call them out on physical problems that come with being premature.
Example 1:

did you know trishy has asthma, like 30 allergies, heart problems and she slow ash?yeah she’s a premature baby

Example 2:

Person 1: “you guys i can’t do that, i’m allergic to peanuts”

Person 2: ur such a premature baby 😐
by Jabuu September 2, 2022
Get the Premature Baby mug.