Neopronouns are personal pronouns that have been created recently, which means many people can feel out of place or confused when asked to use them. These pronouns work the same as the other personal pronoun sets and are often used by people who do not want to be identified by masculine, feminine, or ambiguous personal pronouns and the associations that these pronouns have are based in personal perception and preference. Just because you are not familiar with a pronoun set, does not mean that you can choose to not use that set when requested, or that those pronouns are fake, or silly.
When meeting someone new, the best way to bring up the subject of pronouns is to introduce yourself with the pronouns you use first, and then ask if they would like to share theirs. It is better to ask someone directly and politely what their pronouns are, rather than assuming. If you accidentally refer to someone with the incorrect pronouns, it is best to correct yourself and quickly apologize before moving on. Drawing attention to the mistake, or making an extended apology, is often uncomfortable for the person you are referring to. If someone declines to share their pronouns, ask if they would prefer you use the ambiguous single pronoun or no pronouns.
When Pronouns Change
If someone you knows changes their correct and or preferred pronouns, check with them to make sure you are clear on how to best refer to them. Some people may choose to use one set of pronouns around friends, and another around classmates or family. There are many reasons someone may choose to change their pronouns in different social settings, but these reasonings are generally private, so knowing what pronoun sets to use is more important than knowing why you are using different sets. If someone does share why they are using different sets, keep in mind that it is personal to their identity.