To steal from someone, espby overcharging: robbed him blind buying pre-made salad at the grocery
The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D. Copyright (C) 2007 by HarperCollins Publishers. Cite This Source
Idioms and Phrases with rob someone blind
rob someone blind
Cheat someone in an unusually deceitful or thorough fashion, as in The nurse was robbing the old couple blind. This idiom may allude to robbing a blind beggar, who cannot see that the cup collecting donations is being emptied.