A mixed martial arts fighter from Minnesota has been knocked out from his job as an assistant wrestling coach following comments he made about President Obama last month, he told FoxNews.com. Jacob Volkmann, 31, of White Bear Lake, Minn., said he was placed on paid administrative leave on Friday by the White Bear Lake School District after he invited Obama to make an appointment with him for a "glass-ectomy" on Dec. 30. "A glass-ectomy is when you cut your belly button out and put a piece of glass in there so when you have your head up your butt you...