Unyielding feelings of self-doubt have plagued popular Atlanta-area Zoo Crew DJ Steve 'The Hedgehog' Stevens since early Monday morning, when the longtime WROZ radio personality's wackiness-confidence was shaken by a younger, wackier arrival on the Morning Zoo Crew staff. 'I've been using the same toilet-flush sound effect for years, and yesterday Nutjob [Bob Sienkiewicz] called it 'tired,'' said Stevens, 44. 'Furthermore, 'Drive-Time Atlanta''s 'Freaky Friday Follies' has featured my Bush impression novelty songs since before that upstart ever honked a bicycle horn. But, what if he's right?' According to sources close to him, the anxiety-stricken Stevens has lain sleepless in bed the past three nights, staring at the ceiling, endlessly reliving every listener call-in requesting Nutjob Bob's hugely popular 'Fart-Talker' character, and pondering the soul-crushing futility of existence. 