Replying to Operation: Eliminate Bitty Brigade

So these girls i used to go to school with think they are absolutely hilarious and decided to run around our nice quiet little town in upstate new york and proceed to tag kids cars with pink window markers writing "Bitty Brigade" all over all of the windows of the car. I though this would be a perfect place for newschoolers to step in and provide me with some suggestions for vehicle payback now that i have come to learn who infact the brigade of bittys are. POST UP YOUR SUGGESTIONS FOR RETALIATION!