An adult, most commonly a male, who has never fully developed or matured emotionally and is characterized by a low degree of self awareness, awkward interactions with other people, a lack of empathy and an inability to achieve intimacy.
Gary: "Ken, I hate to be the one to tell you this but Uncle Gilbert has cancer."
In Australia; to be severely reprimanded, told off. To be caught engaging or participating in an activity deemed deplorable by a mature other. Often used to describe someone who's actions are likely to be discovered at some time in the near future.
"Dick moveAllan, you'll surely get skunted for that one."