No Tattoos Allowed

Riddle: Brent, who is an artist, had a tattoo on the skin. Later his friends, Mark and Andie, invited him to a museum to watch some art displays. He decided to bring the painting for the display. When all three went, the man in charge said to them and rest of the people at the entrance, " No Tattoos on Skins", so none of them with tattoos was let inside except Brent. How?

Answer: He had the "tattoo" on the skin in the painting for the display, not on his own skin.

Source: https://www.riddles.com/7017

Brent, who is an artist, had a tattoo on the skin. Later his friends, Mark and Andie, invited him to a museum to watch some art displays. He decided to bring the painting for the display. When all three went, the man in charge said to them and rest of the people at the entrance, " No Tattoos on Skins", so none of them with tattoos was let inside except Brent. How? — No Tattoos Allowed by Kesh Carey Riddle