My sister and I (we were around 8 or 9) were at the beach building a sandcastle when out of nowhere, a boy around our age, stomped on our sandcastle! We were shocked at this unprovoked attack but were not the sort to tattle. His father, seeing what his son had done, told him not to do it again. The son didn't even respond. I got the feeling he was in the habit of disregarding his parents. My sister and I moved a short ways away and rebuilt our castle. STOMP! followed by obnoxious laughter from the brat. My sister and I looked at each other then again, started to rebuild. This time we made a revision: we inserted a sharp stick into the tallest tower of our castle. STOMP! then a loud shriek of pain from bratty boy. As he runs crying to his dad, my sister and I watched dolefully, not sure if we were about to get in trouble. “Daddy, those girls put a stick in their castle and hurt my foot!”, the boy wailed like he'd been bitten by a shark. “Well son, I told you not to step on their castle,” replied dad mildly. The boy sniffled a few more times and pouted, but left us alone thereafter.

Sometimes you have to make your own karma.