John Dies At The End by David Wong (2009, Hardcover) 1st / 4th

It's a drug that promises an out-of-body experience with each hit. On the street they call it Soy Sauce, and users drift across time and dimensions. But some who come back are no longer human. Suddenly, a silent otherworldly invasion is underway, and mankind needs a hero. What it gets instead is John and David, a pair of college dropouts who can barely hold down jobs. Can these two stop the oncoming horror in time to save humanity? No. No, they can't. \""John Dies at the End\"" has been described as a 'Horrortacular', an epic of 'spectacular' horror that combines the laugh out loud humor of the best R-rated comedy, with the darkest terror of H.P. Lovecraft. Hilarious, terrifying, engaging and wrenching, \""John Dies at the End\"" takes us for a wild ride with two slackers from the Midwest who really have better things to do with their time than prevent the apocalypse.