Any human persons who have succeeded in physical survival from infancy, but are socially and psychologically conditioned to remain, or
stay, as
intellectual "babies."
A Staybie (singular) has many evolutionary advantages including, but not limited to, continual
comfort, social coddling, and mating success.
"How can Karen possibly believe that Boss
will buy that lame excuse?"
"Bro, Karen and Boss are Staybies, they
will always just gurgle and roll on their backs no matter what actual problem happens."