In the holiday-themed episode of 'WeWow on the Weekend,' hosts Dennis and Reggie invite special guest Thomas Fingerling for an engaging Q&A segment with listeners, addressing questions about knuckle anatomy and the science behind skin wrinkling in water. The episode also features a humorous exchange about Thumb Wars Day, where characters prepare for a thumb wrestling competition. The scientific aspects of knuckle cracking are explored, revealing that the sound is due to gas bubbles in synovial fluid. Despite a decline in interest due to the internet era, Thomas shares his knuckle-cracking performance, aiming to rekindle fascination for this unique skill.