1) An adjective used to describe a man named Greg, Gregory or Gregorio who is very tasty and delicious.
2) The state of deliciousness, attractiveness and general appeal of a certain man named Greg.
That man is gregalicious!
Gregory is particularly gregalicious today. I think he will need to be pleasured and spoiled.
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.