A cup of Asskicker coffee supposedly has 5 grams of caffeine, or 80 times the amount in a regular cup of coffee. Can that be right? According to Wikipedia, the median lethal does of caffeine "is estimated to be 150 to 200 milligrams per kilogram of body mass (75–100 cups of coffee for a 70 kilogram adult)." That would mean you'd have a good chance of dropping dead from drinking a cup of Asskicker coffee.
From Oddity Central:
[Adelaide, Australia's Viscous Coffee owner Steve Benington] says he came up with the idea for the Asskicker when an emergency department nurse asked him for something that would keep her awake and alert for an unexpected night shift. "She consumed her drink over two days and it kept her up for almost three days — I toned it down a little after that and the Asskicker was born," he recalls. Nowadays, the complex concoction is made with four espresso shots, four 48-hour brewed cold drip ice cubes, 120ml of 10-day brewed cold drip and is finished with four more 48-hour brewed cold drip ice cubes. "Each cold drip ice cube is approximately equivalent of a bit more than two shots of espresso in caffeine," Benington explains.