Ok, so this Hubba Bubba campaign which was released march 2007 seems to be piggy-backing on all other advertisers posters.... I have no idea how BBDO Düsseldorf pulled that off, but then again BBDO has triumpf and P&G (Ariel as seen below) so this might have been only running on their own clients thing, in which case - more power to ya! Well done. (the badland twist is inside folks)

Advertising Agency: BBDO Düsseldorf, Germany
Creative Directors: Ton Hollander, Marie-Theres Schwingeler, Toygar Bazarkaya, Ralf Zilligen
Art Director: Julia Furtmann
Copywriter: Kai Hoffmann
Photographer: Volker Nerlich
Released: March 2007

However, here comes the usual, right? Yup, seems that JWT has done it before or so says our anon tipster that adds this image to the collection and the comment "two years ago!"

That should pop someones bubble.