Cadiff Girl, that was not the effect intended at all!!! I'm so sorry I made you feel that way. On the contrary, this little routine was designed with a thumb-nose to supposed ideals in mind.
Ryce, you ask me if I had formal training, well, the answer is no. The truth is that I opened myself to dance freely like this only later in life.
Here is what: I grew up in a very strict catholic culture where as a girl, I was not encouraged towards sports. Lots of details skipped here, I started working out in aerobic classes in my mid-twenties as a recovery strategy from anorexia, precisely because I was so bad at this activity. My movements were jerky and all over the place. I had this intuition that salvation out of perfectionism and competitive eating disorder was in doing something I was not good at. Well it did help me, I kept with it and low and behold, 25 yrs later, I am in a place where I can play with it without too much self consciousness.
In my 30's I did a lot of "aerobics" anf kick boxing; in my 40's I started yoga - finally. This made me very aware of what Gigi you call "lines" I guess: fluidity, stability and core. Then, one day about 3 years ago, a friend posted a video of a Charleston competition on my Facebook wall and I was fascinated. I started practicing Charleston on my own, from jazz and electroswing moves I learned on Youtube. I imagine real dancers can tell I don't have technique. I still have so much to learn.