what dances can you NOT do?

You talking about Soulja boy- can't do it.
I usually look up dance moves on your tube and practice before I go out.

Um, I thought I was the only one.  back in 1974 or so when I was a kid my brother and cousin laughed at me so hard trying to do the robot [you gotta be O-L-D to remember that one] - i stopped dancing for years.  Pitiful.  One of my weight loss goals is to take an african dance class  - guess I better get to the gym so I can dance without huffing and puffing and falling over and having a heart attack or something!

im still working on the butterfly...

I am both spastic and out of date but I dance like a happy fool when the music moves me.  Rythm be damned!