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."