The Emperor's New School (2006)

S1E17 Fortune Cookie Day

Kuzco becomes fascinated with fortune cookies and starts to take their messages seriously, following their advice closely. Meanwhile, Yzma hatches a plan to deceive him into relinquishing his kingdom by inserting false fortunes into the cookies. One of these phony fortunes warns Kuzco that if he doesn't hand over the throne by 5:00 PM, he will transform into a hairless sloth.