When he stops drinking

A man sat down at a bar, looked into his shirt pocket and ordered a double scotch.

A few minutes later, the man again peeked into his pocket and ordered another double. This routine was followed for some time, until after looking into his pocket, the man told the bartender he’d had enough.

The bartender said, "I’ve got to ask you. What’s with the pocket business?"

"Oh," said the man, "I have my lawyer’s picture in here, and when he starts to look honest, I know I’ve had enough."