It was Andy Warhol who thought it up and created the art but Lilly Tomlin is the one who said it. As she held his famous picture of a Campbell's Soup can in one hand and an actual can of Campbell's soup in the other.
"IS IT SOUP OR ART"

In the case of the coke can, it was the only model I had on the plane. I have found that staring at people on an airplane with the intensity to draw them no matter how interesting they are can get you "labeled".
As you were,
Jay