Implant a suggestion into your sister's mind.

You're still trying to figure out where these powers can take you and as you smile at her remarks you start to wonder if you'd be able to implant a suggestion into her mind like those professionals do on TV when they hypnotize someone. It will be a good way to start testing out these powers and seeing how far you can take them.

But what suggestion should you implant? It should be something that you will be able to easily pick up on and know it worked without any doubt. You run through a list of options in your head trying to figure out the easiest one to plant. Then all of a sudden your mind goes to a very naughty place. You start to think about all the sexual ideas you could put in your big sisters head. You might be able to make her want you more than she's wanted any guy in the world. For that matter, you could make her want your dad while you just sat back and see if it worked or even your mom! You knew you wouldn't have to wait long no matter what you did because every morning your family eats breakfast together in the same room so it should be obvious right away.

You sit up in your bed and try to rationalize.

"Even if this does work... and who says it will? I can just undo whatever I tell her tonight before anything happens tomorrow and if it does work I can just implant thoughts into my family's head so that no one remembers anything!"

You of course know it's a risk because you're unsure of what exactly you can do but the stirring in your shorts tells you that you have to do this.