<human>: Can you condense the text into a few key points?

Have you ever indirectly gotten back at someone for something? 

When I was younger, I had always been picked on by this one person at my school for being skinny. I had never been able to really fight a person that was bigger than myself so I usually always indirectly retaliated.

We shared one of our history classes together when I was in the 6th grade and normally we always did group activities and would do problem solving. Well it just so happens I was prepared this day with a very particular surprise for him.

 I had acquired a piece of dog poop freshly laid that morning from my dog tucker and hid it in a plastic bag in my backpack. I was really good at being "ninja" like about the classroom (normally when it came to acquiring a pen or pencil). I had noticed his history book sitting beneath his desk all by itself. Slyly I walk over and pretend to drop something and casually go to pick it up. I had already had the plastic bag in my hand with the dog poop inside ready to go. 

I stealthily slid the dog poop in between the pages of his book (still moist by the way for it was still early that morning) and slammed it shut with such force that I almost became giddy with pleasure. Casually getting up, I walked back over to my study group and pretended as if nothing happened. 

About 10 minutes later we were asked to open our history books and begin reading the context. Although I tried not too look over, I could feel his expression of shock as he opened up his text book to find dog feces smeared across the pages. I could barely stop smiling as he was deeply disturbed and disgusted and none the wiser. It was a great day for me and for others that he had also bullied.
<bot>: Kid bullied me in 6th Grade, I acquired dog poop and smashed in between the pages of his history book with much pleasure.