You're used to your enemy messing with you at school.

You decide to get him back one day.

As you're walking down the hall, you see him talking to his friends, his back facing you.

With a smirk, you run your nails up his spine.

You expect him to gasp but instead a startled moan escapes his lips

You stop dead in your tracks and turn around, staring at his blushing face.