Mila Kunis introduced boyfriend Ashton Kutcher to her parents over a play and dinner this weekend. On Saturday, the couple took her folks to “Billy Elliott: The Musical” at the Victoria Palace in London. The following night, the four had dinner at Duck & Waffle — the same restaurant where Kunis and Kutcher, who’s in a contentious divorce with Demi Moore, had a double date with Princess Beatrice and her boyfriend, US businessman Dave Clark, the weekend before.