The term 'ALL FAT' is a reference to the podcast 'A FAT Positive Podcast', which is hosted by She's (4 letters). The podcast focuses on topics related to FAT acceptance, body positivity, and health at every size. It features interviews with experts in the field, as well as personal stories from people who have experienced fatphobia and discrimination. The podcast aims to provide a platform for people to share their stories and to create a safe space for conversations about FAT acceptance.