You test it on one of your sisters

You decide to go back home and try it on one of your sisters, not wanting to endanger some innocent bystander. You race up to your room, taking the pen out only once you're sure you're by yourself. Now, you find that you need to choose between your older sister, Tina, and your younger sister, Claire. You know that both would be easy to get without getting the other suspicious. So, who do you decide on?

(Author: Kirby)