Left or Right?

He came back today. I was happy to see him again. He didn't look as uptight as his last visit ...

.

MA : Do you prefer to affix your thumbprint or sign on this form?

Him : Er, thumbprint?

MA : Ok, I need you to thumbprint above this line.

Him : Er, left or right?

MA : Right, please.

Him : Ok.

.

He raised his left hand.