It's mean to make fun of someone wearing a wig.
Billy is at the mall with a friend and notices a stranger with a wig that looks really obvious.
Billy wants his friend to see the wig.
Billy quietly points out the wig to his friend commenting that it takes some bravery to choose to wear a wig like that.
Billy makes a commotion while getting his friend's attention about the wig while laughing which draws the attention of the wig wearer.
Billy and his friend shrug it off and continue about their day.
The stranger in the wig yells at Billy for being so insensitive and explains that they have cancer.