Had a post player (6'6", 230#, had a look at the NBA) do a spin move on a guy, but his steps were done oddly. I called him for a travel.
He complained at me that I couldn't call the travel because I didn't see anything because his feet were moving too fast for my eyes.
I told him while he was correct, I know it's a travel becuase I also use that move when I play.
His sense of humour caught the joke. (I'm nowhere near a post player build.)