shake hands with the unemployed

An older man made this remark when he left the bar to urinate: "Well, I'll go back and shake hands with the unemployed." Since he was heading for the men's room I didn't get the significance of this statement for a minute or so; it was, of course, a reference to sexual inactivity.

Why did the preppie boy make a great social worker? He had a lot of practice shaking hands with the unemployed.