This familiar riddle asks: What is always found in the last place you look?
The answer is: whatever you were looking for.
The joke is based on a simple fact: once you find the missing object, you stop looking. That means the place where you finally find it will always be the last place you searched.
The riddle can sound mysterious at first because it seems to ask for one particular object that is always hidden in the same kind of location. But there is no special hiding place.
The phrase “the last place you look” describes the end of the search itself. Whether you are looking for your keys, glasses, phone, or anything else, the search ends as soon as the missing item turns up.
That simple logic is the entire trick.
