In the "Fake Snake Prank On Family" video by Niana Guerrero, she sets up a hilarious prank using a realistic-looking rubber snake to surprise her family members. The prank unfolds as she places the snake in various locations around the house, capturing her family's shocked and startled reactions. Laughter ensues as they scream and jump back in surprise, showcasing their playful personalities. Niana's siblings and family members each have unique reactions, from shrieks to laughter, and their attempts to deal with the “snake” add to the comedy. Overall, the video highlights the fun and bonding that comes from playful pranks, making it a delightful watch for her fans.