factorial

Originally a mathematical term. Denoted as "4!" and read as "four factorial," it's the product of 1x2x3x4=24. Heard used when describing someone whose clothes are about 10 sizes too tight: "Yo, she ain't no size four, she's a size four factorial!" Originating in the Manayunk area of Philadelphia, PA, as well as the Philadelphia suburb of Phoenixville, PA, as a word to describe anything or any situation as totally outrageous or ridiculous, it is quickly becoming adopted as colloquialism all over the Philadelphia metro area.