He did not seem to notice that I had come in and went on making small sucking noises with his thumb.
He made a crude compass with his thumb and forefinger.
She made a gun with her thumb and forefinger.
She made the money motion with her thumb and two fingers.
Leaning against the table, the new operator made a slight motion with his thumb.
He made a pinching motion with his thumb and finger.
"Across the street," said the fireman, making a gesture with his thumb.
The leader held the shotgun on Gary and made a motion with his thumb.
She made an adjustment with her thumb and said, "Out!
The first time I felt this big," he said, making the point with his thumb and forefinger.