My body now moves by its own way

I think it knows what it is doing. I don't feel bad after doing it. When both he and his friend suddenly approached me, while I got the backpack on my back, ofcourse my eyes first landed to his, but it stayed on a short look, my look was neither serious or maddend, it just had no reaction at all. My hand lasted on my i-pad on the table, while I said: ,,Yes I think so", even though I know it was a lie, I haven't had one yet. While I said that I got the ipad already under my arm, and said it while just looking at the others and then I walked away.