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.
Dude, this table is so wet, every time I shoot I end up with a John McCain cup. Damn mavericks!
by Murky Waters September 05, 2008