Well that random flailing is kind of my point to people who say they don't know how to dance...
But GM's and GG's do dance differently in general and so do I depending on how I am dressed. When I dance as a girl I try to dance in ways that I find sexy when I see GG's dance. I shake my ass and breasts, I hold my arms up and do a kind of sexy swaying thing as as my arms come down and bend my knees a little... I just close my eyes and let it flow!
After I have had enough drinks as a guy I will dance but it's mostly just moving my feet, hips, swinging my arms low, and trying not to look "too girly".