and are you male ? Female ? do you sit "closed in" telling others you are afraid of your own shadow and do not want to be bothered or do you sit "open" welcoming folks to chit chat while also letting them know you are a confident human ?
well, during Presidential debate when candidates sit down, i mean just any events, including my high school graduation, college graduation ceremonies, those people on the stage almost all of them crossed their legs (for females it's usually knee to knee, for males it's usually ankle to lap)
I saw an informal TV study at one point showing the ways men and women cross their legs. Men primarily do the ankle->knee cross, women primarily do the knee->knee cross, and both equally do the ankle->shin cross. Women also occasionally do a double cross where one knee goes over the other, and the crossing foot goes around the other leg (I don't have the flexibility to do this).