SmolBean's are people who usually use the words "UwU", "OwO", "UnU" and many others. Smol Bean stands for a small, innocent being. They usually say things like "UwU gimme cookies!!!" and are more of a childish type.
Adjective: Used to describe somebody who is NOT a good bean, e.g. is unbased, uncool, and not good. Somebody may be referred to as a badbean after they do something bad.