Elvendude

From the back cover of the Baen first edition: "Mall kid with an elven past - Adam was born an elven prince, but when his father's realm seems doomed to fall before the onslaught of the evil Unseleighes, the royal youth is sent - much against his will - into our world so that he can grow to elven manhood and fight another day. For his safety, and to keep him from returning instantly to the fray, he's been magically given a set of memories that make him think he's grown up amid the suburban lifestyle of bored kids and indifferent parents. But then, amidst the normal troubles of a "typical" adolescent, Adam's life gets truly complicated. Suddenly his worst nightmare isn't his math final, but the Dark Elves who, with the aid of drug dealers in this world, are trying to track him down."