Dirty Fido, Whoopsie, Naughty Dog/Cat or, simply, Turd. There are so many names for the classic joke shop fake poo. 

We stock four models, one for every taste (you can see them all here). 

This is the largest of our turds, and it even comes with flies. These are manufactured by Ming Shing, one of the pioneers of the modern joke industry, who have been creating jokes since 1963.
 
Not suitable for children under 3 years. Choking hazard due to small parts.