It's an expression they use in the text to refer to a nagging doubt - something that just keeps itching at you, and there's nothing you can do to stop it.
In this case, that Raymonde, Chandebise' wife, thinks her husband's cheating on her, because he couldn't get it up one evenin...
@smilegrrrrrl
It's an expression they use in the text to refer to a nagging doubt - something that just keeps itching at you, and there's nothing you can do to stop it.
In this case, that Raymonde, Chandebise' wife, thinks her husband's cheating on her, because he couldn't get it up one evenin...