You're Thurston, a 19 years old guy, and you have a sister named Kim, who is only 15.
You are wasting your time playing video games in your bedroom, but your little sister comes in and ask you something.
"Hey Thurston, I have my exams the ne...
- It'll be fine don't worry.
- I guess, but I need your help.
- Ok, I'll help you for it if you really want to.
- Not exactly..."
She takes something from her pocket.
"These are switching rings. Thanks to them, we could swap bodies, and you could do my exams for me.
- Wait, you
-Please ! I'm so worried ! I totally sucks at mathematicals and you're a genius !"
What will sou say ?