Don't jerk off. Save that for the airplane.
-Wheelchair racing with other chill looking people who are also stranded.
-Sleep.
-Get wasted.
-Find a place, any place with music. Ask some hot girl who looks bored out of their mind to dance.
-Weed out the Jews (money on string down the terminal)
-Place your used McGangbang tray with half filled drink outside of the door on the ground of any frequently travled door. Make sure its just outside the swing radius of the door so they walk into it.
We did that on the cruise ship last week and it was hillarious when the people know they look stupid and try to keep their composure.