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1.
The United States mainland. Term used by American Servicemen in Southeast Asia (especially in the Philippines) to describe how they believe America is thought of by the natives. Usually used in conjunction with marriage.

Possibly also used by the natives themselves. PX stands for Post Exchange which is basically the military department store. It sold goods that the average local store didn't have. Servicemen would bring their native girlfriends or wives shopping on base. As they understood it, America had all of these goods and more. It was their main association with the US.
All these little Fillipina girls want to do is marry a Marine and get him to take her to the Land of the Big PX.

I can't wait to get out of this shithole country and go back to the Land of the Big PX.
by sfmc98 June 15, 2009