He played without a pick, using his thumb and first finger.

Willing the portal to open rather than using his thumb, he steps inside.

He used his thumb to press the red button with full force.

I'm pretty sure most right handed people can use their left thumb just fine.

Used his left thumb to ease the focus out to twelve hundred yards.

Using your other thumb, squeeze the muscle by pressing down hard.

It was possible to secure the bubble using two fingers and my thumb.

He used his thumb to wipe the tears from my cheeks.

Do not use your thumb, because it has its own pulse that you may feel.

Using his thumb he pulled at the site of the wound.