Its football season! The sexiest women in the stands are usually the cheerleaders. What better target for the costumed mascots and their pies? PLUS the girls have signed legal waivers with the teams so they can't sue.
Bing apparently likes this prompt too: "At a football game in the rain, a costumed team mascot throws a cream pie into the face of a cheerleader, with the pie remaining on her face and covering her necklace." I changed necklace to choker after getting a long strand of pearls in a picture, even more unlikely than a cheerleader hit by a mascot's pie! Enhanced by Krea. I cropped the pictures to emphasize the women.