How to Roll Your Rs: The Complete Step by Step Guide So, you know how to do a lip trill. But do you know how to do a TONGUE TRILL?? We get this question all the time!! Our EKM Vocal Health Specialist Gabi breaks Amazon.com: We Vibe Ditto, Purple Tongue mapping research: CSU device lets you hear with your tongue Colorado State University How to Trill or Roll Your R's Bilingual Speechie TONGUE RELAXATION EXERCISES Vocal Exercises Rachel's English