Dennis and Reggie are joined by a very special guest for a knuckle-crackin' Q&A segment. Plus, an encore of "Oh Knuck-Crackers! The Science of Poppin' Knuckles!" If you have a question for Dennis, leave him a voicemail at 1-888-7WOW-WOW. Your question might just end up on WeWow on the Weekend! See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.