Grammar Giggles – It Is Baseball Tonight’s Celebration of It Is Anniversary! By firstname.lastname@example.org | March 10, 2014 - 6:15 AM |March 9, 2014 Uncategorized Once again, an apostrophe refresher: it’s is a contraction and means IT IS and its is the possessive form of it so means belonging to it (or in this case belonging to Baseball Tonight) . . . which is what this advertisement is REALLY trying to say. Follow Bookmark the permalink.