This is a really cool ad I saw in the subway recently. Above the subway doors, where normally the subway route map is posted sits a sign saying "Caution: long lashes may get caught between doors". This is an ad campaign from Cover Girl's new lengthening mascara. I absolutely love it. It is so appropriate in where they placed the ad - obviously they created the ad to be placed above the subway doors. As well, the colour choice of black text on a yellow background is appropriate because that is the "caution" design. Overall the design, and what it says is very clever, and I would buy the mascara based on this advertisement alone.