She put toothpaste in his shoes to get back at him for the frog he left in her refrigerator.
You could get back at him for whatever it is you're fighting about.
I wouldn't hurt Lori just to get back at you.
Before playing a prank to get back at someone, it's important to consider safety issues.
This revenge prank is a good one when you want to get back at a college bully.
Just be prepared to have the object of your prank try to get back at you in the same manner.