Ready for some great laughs with your friends and family? This Build your own Burp and Fart Machine has 10 hilarious sounds including burp and fart sounds that are so real you’ll be holding your nose. • Get a good laugh listening to all the quality burp and fart sounds • Hide the machine and play some pranks on your friends and family • Add these funny sounds to your own brick structure projects • All parts are fully compatible with other major brick brands • Teaches STEM fundamentals of electronics • Requires 3 AA batteries not included • Ages 5 and up Burp and fart smells also not included! Download instruction sheet . Click here for troubleshooting help.