Burger King: Cancelled Clown by INGO STHLM

Back to its old tricks, in restrooms across Scandinavia, Burger King is playing a Halloween stunt on its rival, McDonald's.

The Swedish agency Ingo Stockholm installed new voice-recognition software in Burger King toilets, which is trained to listen out for the phrase 'cancelled clown.' If uttered three times, the lights of the toilet dim down hauntingly, and an eerie Ronald McDonald appears in the mirror via special visual effects applied to a two-way 'smart mirror.'