A dot to represent sin. This shirt is designed so that when a person comes up to you ask about the dot on your shirt you are to cover it up. Acting as if nothing is there, actually trying to convince them that you do not have a dot on your shirt. Then you finally give in and realize you have a dot on your shirt and you tie it into sin, and how we try to cover it up. But the only way to get rid of it is to cry out to Jesus and become clean. John 1:29