Cottonelle's aggressive "Be kind to your behind" ad campaign has succeeded in putting their brand at the top of my mind. I was tickled by this series of signs over an escalator at Grand Central Station.

By ending with the one-word question, the ad injects a bit of humor, and it also makes the text a little less blunt and indelicate than if they'd spelled it out for us and said "butts get Cottonelle."