1.
When you're snooping through your sister's stuff and you hear her coming up the stairs:
2.
When you try to leave the house wearing her shirt:
3.
And when she tries to leave the house wearing yours:
4.
When things get physical:
5.
When you are constantly on each other's nerves:
6.
When your parents take your side of an argument:
7.
When you couldn't agree on what show to watch:
8.
When she's got somewhere to be:
9.
When someone tells you, "Your sister's hot":
10.
When you both call shotgun:
11.
When you know exactly who took a shower last:
12.
When she acts innocent in front of your parents but you know better:
13.
When you get in a fight and your mom makes you "hug it out" even though you're still mad:
14.
When she starts laughing about something bad you did right in front of your parents:
15.
When you come back from the bathroom and she's in your favorite spot:
16.
When you have to find sneaky ways to fight with her so your parents won't get mad:
17.
When your parents put you in charge:
18.
When you realize you'd be lost without her: