its a drinking game, where a random object that can contain a lot of liquid is filled with beer. You get as many people as you can in a circle and you all start chanting..... THUN-DER... NA Na NA NA.... NA Na NA... NA.... THUNDER, and so on. While the chant is happening a person will chug as much beer as they can out of the object, when they are done chugging they pass the object to their right and the chant continues until the object is empty. Thats a THUNDER CHUG.
by dcn2uec June 14, 2014
It's when you chug a soda as fast as you can while fist pumping. It's kind of like reversed throwing up.
by ChukaBink February 18, 2012