The invisible ceiling or upper boundary located at the top of a map in a video game.

the whale tail is the shape formed when a g-string rides up high over a womans trousers

One better than the upper deck. Instead of taking a shit in the upper tank, you take a shit on top of the upper tank. Where the upper deck is a delayed sabotage, the skybox is a blatant act of defiance.

When you unscrew someone's showerhead and fill the inside with feces. That way the next time they take a shower they will literally be covered in shit. Similar to the Upper Decker, the SkyBox is a step above.

To sneak a peak at your opponent's bones while playing dominoes, mother fucker.

very expensive pussy. going to cost you a shit load of money to hit it.

A very tall woman's vagina