Facial hair that is not completely a beard but more like a five o'clock shadow. It is neatly trimmed into the shape of a beard but lacks in length. This is most common with teenage boys who believe they can grow facial hair, but can't, and want to look more mature.
Teenager 1: " Hey man check out my controlled stubble, took me 2 weeks to grow!"
Teenage 2: " I'm trying to grow out mine too!"