What is a hypothetical liar?

A hypothetical liar is a hypothetical case that a liar will make up rather than tell the truth, even if it is not what actually happened. For example, a hypothetical liar might say that they were at the store when they were actually at the movies, or that they were sick when they were actually just tired. The idea of a hypothetical liar is that the person is so committed to lying that they will come up with a creative and plausible story even if it is not true.