Deaf people tend to value clear communication. If the word “fat” is what is meant, then the word “fat” is used. Hearing people tend to use other, nicer words such as “overweight,” “plump,” or “chunky.” Hearing people should understand that Deaf people want you to be clear when communicating with them. Say what you mean! Most of the time, you will not be too blunt for Deaf people, but they will appreciate your clear communication.