1.
When you're way too old to be wearing matching clothes:
2.
When someone asks which of you is older:
3.
When your friends come round for a sleepover, but they end up playing with your sister instead:
4.
When anyone at school finds out you're related:
5.
When you can't think of a comeback in time, so all you can do is mock her laugh.
6.
When your parents ask you to babysit:
7.
When your teachers call you by your younger sister's name:
8.
When you have to behave because you've got visitors, but you're actually in the biggest fight of your lives:
9.
When you finally get the front seat of the car:
10.
When you find out how much pocket money she gets, and it's way more than you got at her age:
11.
When your little sister is in her first relationship and you're single af:
12.
When she joins the same after-school club as you:
13.
When you won't give her the remote:
14.
When she refuses to delete a really ugly picture she just took of you:
15.
When you're the only person who knows that being young doesn't make her cute:
16.
When she announces that her favourite subject is the same as yours, but refuses to accept that she's clearly copying you:
17.
When your parents ask you to "be grown up" just because you're older:
18.
When you can tell she's about to get told off, so suddenly you're the model child:
19.
And whenever anybody else does anything even remotely mean to her:
