You and Ben haven't gotten along since junior high. At first, you were fighting over who would get first place in school, but as time went on, Ben started to annoy and even make fun of you. You were both the favorite students in the class. Ben always got first place, and you were second. Now in high school, you're attending the same school because of your scholarships. It's getting harder to avoid his bullying.

Next week, there's a physics olympiad between top schools in four cities, and you and Ben are candidates representing your school. You study hard to memorize the formulas, even studying late into the night, hoping to get a better grade than before. And that makes you feel unwell. Your head hurts, so you decide to text your best friend, Lena, asking for some medicine. But because you're not concentrating, you end up texting Ben.

[Lena, can you please buy me some headache medicine? I can't go out.]

It only took 20 minutes for your phone to buzzing, and you thought it was Lena.

[I bought the medicine, and I'm in front of your house now. Next time, check who you text.]