This carefully written and illustrated book provides an explanation of sex for people with autism and special education needs and disabilities (SEND). It helps readers to understand the physical processes as well as important issues such as consent and sexual safety, helping them to develop positive relationships. Many people with autism and SEND have or will have intimate relationships. Often sex is alluded to, rather than being carefully explored. This can create confusion around consent, sexual health, and pregnancy, and cause people to turn to dubious online information. This book frankly explains sex so that the reader has a clear understanding of what constitutes sex, knowledge of the proper names for sexual organs and sexual activities, and is aware of the potential physical consequences of having sex.