Two other questions came up that he looked uncomfortable with:
After the purchase Martin went to the back of the store and picked something up and this clerk watched him do it and yet on the stand he played stupid. Even Guy noted it.
What could he have picked up???
That bothered me too, Uncle Chip. Instead of leaving the store, Trayvon went halfway to the back and appeared to either bend down to pick up something from the floor or steal something from a shelf.