It's rotten to cut yourself for attention.
Melissa is mad at her boyfriend Jack because he blowing her off for video games.
Melissa wants Jack's attention.
Melissa approaches Jack with his favorite snack offering it to him in exchange for a hug.
Melisa uses a kitchen knife to create a superficial incision to show Jack.
Melissa convinces Jack to spend time with her while he's eating.
Jack takes Melisa to the mental hospital where they hold her for the next week and a half.