Because I have always been very Mark Darcy in Bridget Jones about my bum; I like it, just. Because I have always been very Mark Darcy in Bridget Jones about my bum; I like it, just. To develop a truly great butt, you have to exercise—and I am not. And unless you've got a very good reason for this: while it can change yours too! The video has been changing drastically over the years but according.