A punishment, often dealt by moneylenders in the United Kingdom, where hydrochloric acid is dispensed by eyedropper to burn the debtor and encourage them to pay the money back as quickly as possible.
1. For failure to pay his gambling debts that man had his face burned by a Proper Dropper.
2. You have 1 week to pay back the money you owe or you will be tortured by a Proper Dropper.