How to Take Revenge On Three Older Sisters

First, pretend to go along with whatever plan they may hatch.

Yes, I believe those are stickers all over her body.

Then, do something a little unpredictable and funny to draw parental attention to yourself, which makes the sisters have to "clean up" whatever it was they were doing to you.

Find a baggie of cereal belonging to one of them and empty it out so that they get into trouble.  After all, there are only so many times that Mom and Dad will believe "it was the baby's fault."

Finally, make sure to grab the xbox remote any chance you can, and push all the buttons, causing instant mayhem and potential death to whatever characters are on the screen. This is ultimate payback.

The icing on the cake is to laugh about it. Always. And I mean always laugh.

It's hard to be mad at a smile like this.