The alleged 'skill' of a well-timed bowel movement during a night out, allowing further consumption of alcoholic beverages and the like, due to the removal of excess, and in some cases, nausiating, liquids in the stomache.
Person 1: Erghh... Be right back.
Person 2: Okay...
Person 1: Ahhh. =]
Person 2: Where you just sick?
Person 1: No! It was a Tactical Chunder...
Person 2: Oh, that's okay then! Good Effort!
Person 2: Barkeep, 2 of your finest Jaegerbombs, please!
Person 1: Woo! Get them down me!