A character has a piece of fruit. There is no reason for him to have the fruit; he just does. Often, he is an eccentric character and will pull out the fruit whenever the moment is quite tense. It's a Fruit of the Loon, you see. This works extremely well with bananas (because Freud Was Right, anyone can slip on a Banana Peel, and banana is an Inherently Funny Word), but it also works with apples, oranges, kumquats, lemons, tangelos, pineapples and, in one case, a satsuma. Often makes use of a Fundamentally Funny Fruit. Compare The Snack Is More Interesting. Examples of Fruit of the Loon include: