Top definition
The second ghost cup during beer pong.

Used during beer pong, this term describes a cup that has water or beer beneath it, which causes it to mysteriously slide when hit by a ball (See ghost cup). Because the cup usually diverges from the original formation, it becomes a maverick cup, thus becoming a John McCain cup due to the fact that McCain is the original Maverick. A second cup that goes rogue is called a Sarah Palin cup.
There's so much beer on the table that every time I shoot, I end up with a John McCain cup or even a Sarah Palin cup too!
by Murky Waters September 05, 2008
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