LINGUISTS and proctologists from around the world are stunned by a Detroit man's unique gift ... he is able to speak fluent French out of his buttocks. Jason Jablonski, a 40- year-old furniture salesman, began speaking French out of his butt six months ago and has been unable to stop ever since. According to medical records, he was awakened one night last January in his bedroom by a strange voice that seemed to be coming from under his sheets. "I listened, but was afraid to move," explains Jablonski. "I thought an intruder may have gotten into bed with me. I...