How do you wake your sister up?

Step 1: Call her name and request that she wake up immediately. If she does not comply, proceed to step 2.

Step 2: Disturb her (e.g. pull her arms) and make her as uncomfortable to sleep as possible. If she still continues sleeping, proceed to step 3.

Step 3: Get a glass of ice-cold water and splash it onto her face. It is expected that she will wake up instantly, feeling refreshed.