Nonsensical exclamation used to replace traditionally foul language. Originally used in Christ the King High School in Brooklyn, NY. Now used extensively amongst alumni of the high school and in the New York metropolitan area. Notable usage in Stevens Institute of Technology in Hoboken, NJ.
"Oh my folantis! That chicken and rice was spicy!"
"What the folantis you doin' in the bathroom? You stinkin' up the place!"