Examples of this idiom:
- "I don't get it!? First you forget our anniversary, then you add fuel to the fire by not picking me up."
- Asking him about her right now would be like adding fuel to the fire. Let him cool down.
Meaning:
To make a bad situation worse; to do or say something that causes more trouble, makes someone angrier.
Image credits: http://www.theoli.com
Image credits: http://www.theoli.com