BOOKS Indolence Is Bliss Sam Lipsyte's bravura new novel manages to lift slacker fiction out of its terminal adolescence. HOME LAND BY SAM LIPSYTE. PICADOR USA. 229 PAGES. $13. SLACKER NARRATORS HAVE never been the most appealing literary subgroup. Sad sacks by definition, sluggish by inclination, these goopy self-obsessives display little moral complexity and even less wit. Lewis "Teabag" Miner, the wiggy epistolary narrator of Sam Lipsyte's new novel, Home Land, is the exception who proves the rule-indeed, with any luck, he could be the one to retire it, and make aimless American middl...