Anything. Stealing from your friend, stealing your bestfriend's boyfriend/girlfriend, etc. Share you stories, and things.
I'll start:
I have this one friend who always think she's hot and gets any guys but the guys she gets are ugly (
) and I haven't came at her or anything but she has this really ugly picture of her and everytime I need a good laugh or feel down about my looks I would go to the photo and start laughing at her.
I had this Art Teacher last year and she kept candy and food and stuff inside her desk for her to eat, and everytime she dismissed our class and made sure they went down the hall and left her class when the bell rung, me and other students would run behind her desk and steal all her candy and stuff and she would be mad the next days because she said students would keep stealing from her. Even the nicest and most good students started doing it.
When I was younger every now and then when my mom had a lot of $$$ in her purse, when she fell asleep I would go in her purse and get a dollar or two. Lol, I felt wrong. Especially when she would buy me stuff.
I just like food okay 
