Answer:
Tool of thief, toy of queen. Always used to be unseen. Sign of joy, sign of sorrow. Giving all likeness borrowed.
I go inside boots and outside shoes. What am I?
Better touch me before you proceed to second.
What has an eye but cannot see?
When it comes to me, you go on red and stop on green. What am I?
I flow from the Homerβs mouth when he sees doughnuts.