Ok so at school these are almost a daily occurrence and I thought it could be good to write Castle and Beckett have a pen fight. I don't really know if I will continue, but I thought I would let you have a look and see what you think

I do not own Castle

It was an unusually warm evening for autumn. Kate Beckett had to roll up the sleeves of her blouse to feel somewhat cooler. It had been a slow day no bodies had dropped for her team yet which was a rare occurrence, so she decided to catch up on some paper work.

She could feel Castle's eyes on her as she was writing down notes. Before that he was busy doodling random pictures with one of the new highlighters she got yesterday.

Suddenly she felt something glide across her bare arm.

"Castle!" she exclaimed when she saw the bright green mark slithering up her arm.

Castle only chuckled in amusement at her exclaimation.

She leaned in close to Castle and whispered "don't get me into a highlighter war Castle I was the champion in high school."

Ignoring her, he slides the pen against neck. He smirked at her slightly shocked expression.

Deftly she grabs the pink one from her desk and gets him across his cheek and nose to his eyebrow. Leaning back she bursts into laughter when looking at his stunned face.

"Hey wait a second you can't get me on the face that's against the rules!" he whined as he jumped around Beckett's desk.

"What rules!" Beckett questioned

"The ones that you had at school!" he looked at her confused.

Beckett walked up to him slowly "we didn't have rules"

"Ok." Castle said stretching out the letters as he put a green dot on her nose.

Laughing, he runs to the elevator, she quickly she follows and just misses it.

'Damn it Castle!" She walked back to her desk waiting for him to come back. She goes to the toilet to see the damaged he caused on her neck.

"he got me the little..!"

She then heard the elevator ding signalling he was back up.

She waited a while and saw the shadow appear on the floor as he walked past. As he walks in he has his back to him and she moves as quick as a cat and tackles him to the floor landing with an oof! She scribbles on the back of his neck laughing while she does.

"Jesus Kate! You scared the hell out of me" he muttered with his face against the floor

"Gotcha Castle!" as she sprints out of the room."I am the queen of highlighting wars!"