Guy who delivers the rat droppings

The guy who delivers the rat droppings is the unseen person who delivers rat droppings to the hot dog vendor that worked across the street from Fry and Bender's Popplers stand. In an effort to take business away from the vendor, and boost their own business, Bender went across the street and, very loudly and visibly, pretended to be the guy who delivers the vendor's rat droppings. The customers, one of whom was Stephanie, walked away disgustedly, but the vendor astutely recognized that Bender was not the guy who normally delivered his rat droppings, and Bender proudly walked back to his stand.

Trivia

 * In the original storyboard for "The Problem with Popplers", the guy delivered dog crap to the vendor; however, Bender was still recognized as not being that guy.