How to Whistle on Grass

Look around outside for a thick piece of grass. It should be at least a quarter of an inch wide. This type of grass is often taller than the rest and has a seam running down the middle of it.

Pick the grass as close to the ground as possible.

Smooth out the blade of grass and press it between your thumbs. Make sure the grass lies flat against your thumbs.

Adjust the grass so that the thickest portion is between your thumbs.

Press your thumbs together so that the backs of them are facing you.

Notice that there is a little space between your thumbs underneath your knuckles and above where your thumbs meet your hands.

Place that space against your lips.

Blow through the hole. If you do not hear a whistle, adjust the grass so that it runs through the center of that space between your thumbs.