I am a 24 year old boy. My aunt was visiting our home. Her son is an eight year old. He is a most uncontrollable, hyperactive boy. For example, he will switch on the television, watch it from about half a metre away from it, at full volume. He is always pestering me to play with me, which I oblige mostly. But when I have my own work, it is impossible if this kid is nearby. I was trying to study in some other room. The adults were in another room talking but he would follow me around everywhere and wouldn't leave me alone for a second. Basically, I cannot touch my phone to even chat cause he is addicted to games and would forcefully take my phone. When it would not open, he would tap it hard. Even if your phone does not have games, don't worry, because this kid will download some games too. He is a bother but mostly I can handle him, when I am at leisure. Thankfully, I don't have to deal with often, as he lives a bit far off.
Today was different though. I had to study and I was under quite a bit of stress. Also, I was under stress due to some other factors too. I tried balancing both (studying and my cousin's attention), would interact with him some and then tell him I have to study now. Sometimes he would oblige, sometimes he would bang things for my attention, or close all windows or whatever. So, I finally gave up. It was almost time for my aunt to leave, so I opened my kindle to read. Now, my cousin comes up and forcefully taps on it for my attention. This was probably the first time he had seen a Kindle, and he wants me to play with him. I said no, so he continues tapping on it. This time I snapped. I slapped him. He tried to keep a brave face and was smiling still, but he was obviously hurt and his eyes were moist by the time he left. I was shocked too. i tried to ask him if he was hurt. It wasn't a hard smack but I had lost control. I tried playing with him but the awkwardness was there. Soon, aunt called for him to leave. Nobody knew about it and he didn't tell anyone either.
I didn't get the opportunity to apologise properly, and I regret the incident. Whatever be the situation it was my failing and I will never let something like that happen again. In retrospect, I should have just kept the gadget inside when he started "tapping" on it. [By the way, not a justification but he damaged my old iPad in the past also one of the reasons why I snapped.]
I feel I lack tact when dealing with such situations, like I am very straight laced and not good at coming up with lies, even white ones. Is there any way to make him understand that he should respect other people's feelings too and that there are boundaries. At this age, is it not normal for kids to have grasped these things?
What's the generally accepted social protocol of dealing with recalcitrant kids of this age, especially when they are not yours and their parents are loving the fact that the kid is bothering someone else and not them?