Your child is utilizing a slang phrase from African American Vernacular English (AAVE), “finna,” when they say it. A abbreviation of “fixing to” or “fixing up to,” “Finna” conveys the desire or willingness to act. It is frequently used to signal that someone is about to perform or start a specific activity. For example, if your child says, “I’m finna go to the store,” it means they are getting ready or planning to go to the store. “Finna” is often used in casual conversations, social media posts, and text messages to convey a sense of anticipation, determination, or enthusiasm.