Mistress Vee is not one to shy away from public humiliation. She loves it and she feels its the best way to punish someone. That is why she chose to spit on this guy and spit into his mouth in broad daylight and in public. She did it by the side of the road and did not care who saw what she did to the guy. In fact, she wanted more people to see it so that it would be more humiliating to him.