How to whistle folding bottom lip
no finger is mouth just fold bottom lip
I just push my lower lip over my bottom teeth , pucker and stick out my top lip and blow hard and out comes a whistle ! Takes some practice !
I wish I knew
while folding your bottom lip u need to suck in the air instead of blowing it out (need to practice a couple of time to get it right)
U can blow in or suck in i can do both