"Party Favors" is the second segment of the twenty-eighth episode of Yin Yang Yo! It premiered on January 1, 2008 alongside "The Pecking Order", and is the second segment of the second episode in season two.
Coop's mom is throwing a "welcome back/thanks for saving the world all by yourself" party, and Yin and Yang are the only ones not invited. Meanwhile, three flunkies join together and try to get into the Night Master's fortress. However, they need the spare key, which the Night Master gave to Coop!