This document provides an overview of impromptu speeches. It defines impromptu speeches as presentations with little to no preparation time that are often informal. The document then outlines key features of impromptu speeches such as requiring quick thinking. It provides guidance on anticipating impromptu speaking situations and using simple organizational patterns. Examples of organizational patterns discussed include past, present, future and stating a claim and providing evidence to support it. The document emphasizes using thought speed during the limited preparation time and recommends practicing impromptu speaking.