1. Refused to shower until the second your sister wanted to shower, and then raced her to the bathroom and tackled her to the floor.
2. Pointed at ugly characters on television and said, "That's you."
3. Shared a bed on holiday, and considered it entirely justifiable to hit your sister as hard as you could if 1mm of her body touched your side.
4. Ran to bagsy the front seat of the car before your sister got there.
5. And sat on top of your sister until she moved because she sat in the seat you wanted to sit on.
6. Borrowed your sister's clothes and made absolutely no effort to be subtle about it.
When it comes to sisters, borrowing = stealing.
7. Made up a secret language so that you could plot against your parents without them understanding what you were talking about.
8. Pretended to reach out for a hug and then secretly rugby-tackled her to the ground.
9. Watched movies in sync on long-haul flights, even though you were looking at two separate screens.
10. Denied being related even though you quite clearly look the same.
11. Bit her so hard it made a mark.
12. Got unreasonably angry when any of your friends called your sister "cute". Or worse, "hot".
13. Tried to get into her bedroom when she didn't want you to, and then lent your entire body weight on her door until she gave in.
14. Made your teddies chat.
15. Eaten food you didn't want to eat, solely because your sister wanted it.
16. Cast yourselves in every TV show you have ever watched together.
17. If your sister is younger than you, covered her eyes whenever anyone on television snogged.
18. Prevented your sister from changing the TV channel.
19. Passed each other toilet roll in an emergency.
20. Blatantly copied each other's outfits (and sometimes life choices) but then vehemently denied you were copying.
21. Fought until one of you bled.
22. Felt prouder, more protective, and closer to each other than anyone else in the world.
