Annoying Orange: April Fruits Day is an episode of The Annoying Orange from the third season.
The episode starts with Orange telling Tomato that she is a vegetable. When Tomato got excited, Orange replies that it was an April Fool's joke, and that she was still a fruit, much to Tomato's anger.
Meanwhile, Orange's friends were acting in an abnormal way. When Orange noticed that his friends were acting strange, Pear (Marshmallow in disguise) said something that made Pear and Marshmallow reveal who they were: "I'm warmer than a hot-fudge sundae with an itty-bitty cherry on top! Yay!" Pear blames Marshmallow for making him fit into Marshmallow's costume. Midget Apple was later revealed to be Grapefruit. When Tomato gets persistantly annoyed, she warns Orange of Knife, who then stabs Orange. But he was dropped, and "Orange" is revealed to be Midget Apple. After everybody revealed their real selves, Tomato gets cut by Knife and the episode ends.