1. Posting inappropriate photos of them

2. Posting inappropriate photos of yourself

3. Using slang terms like YOLO incorrectly

4. Posting inappropriate comments on their Facebook wall

5. Commenting on their status updates

6. Chatting with their friends

7. Commenting on their friends' photos

8. Commenting on their photos

9. Tagging them in posts

10. "Liking" things they post

(Source: Daily Mail)