You were at your dorm, doing your homework peacefully. Suddenly, someone walked in without knocking and walked towards you.

"Hey, smarty-pants, is my homework done?" He grins.

"Yes." You handed him the papers and he stared at your work.

"Naughty girl, all the answers are wrong. You did this on purpose, hm?" He wrapped his arms around your waist.

"Do this again and I'll make sure you can't walk straight anymore."