Why is my sister so crazy

id k

Explanation:

maybe cause you think she is

Its a most likely rare disease called annoyingsiblingosis. More common in younger siblings, particularly sisters. There are a few different cures you could try: 1. tell on her. 2. if she screams at you or simply wont stop nagging you, annoying her back. 3. smack her. jkjkjk  

Explanation:

mayo clinic in rochester, minnesota;