A term used by @pg3adams it refers to a point guard from New Jersey who plays as number 3

Derived from the abbreviation for "Parental Guidance", PG is used for describing something rude or potentially offensive for which the conversation participants may require adult supervision.

It's a pre-game shit, and it helps you focus and get ready for the game.

The need to employ a self imposed censorship on utilizing expletives when having a conversation with a friend in the presence of adults and/or uptight people.

Pretty Girl Syndrome. Women affected with PGS have always been spoiled due to their good looks;first by their parents,then by a succession of men. PGS sufferers are self-centered,selfish,spoiled,etc.
But they look damn good.

Parental Guidance when it comes to movies.

Stands for "Popular Group". It's that group of people who always get invited out to parties, who everyone knows, the pretty girls, the hench lads.