At 8 years of age, he should not be behaving this way. It is time for him to start acting like an 8 year old. My daughter is only six. When she tried to pull something like a tantrum, I let her know that this is NOT exceptable behavior for a 6 year old. If she would like me to treat her like a 2 year old I can. I can make her take a nap, younger children don't do all the fun things that older children do, and I can take those fun things away; like girl scouts, and swimming lessons ect... Him laughing and joking like it is no big deal; That is a total lack of respect for you. You need to let him know that it IS a big deal and it WILL BE a big problem for him if he continues. He needs to take you seriously. Look at your family. Does your other family members dissagree with you or belittle your importance in front of him? For Some reason, he feels like he does not have to listen to you. If he did take your athority seriously, he would leave when he was told, with out giving you a hard time. Remember you are the parent, and stick up for yourself. Don't let him walk all over you. Let him know; when it is time to go, YOU GO, and you do so, with out throwing a fit. If he does, assert your parental power so to speak. Take away privilages, or the next time he is asked to do something, SAY NO. Remind him of the way he behaved last time. Tell him that it was unacceptable behavior and you are not going to tolerate that kind of behaviorger any lon. Make him stay home this time, and if he does it again, take even more privlages away. If you don't nip this in the bud at age 8, at 13, you will have absolutely no controll over him and it will be to late. Good luck. Also check with you child's doctor. I know that mine actually has a nurse that will talk to you and give you advice with dicipline issues. Please take care of it now though. He is old enough now, to be more responsible for his own actions. Does he have any other responsibilitiesat home? Does he keep his room clean, make his bed, do chores for you around the house(take out the garbage, set and clear the table)? He should be doing all of these things by now. He should also have positive reinforcement for good behavior. He should have a small allowance for doing chores, When he behaves well on trips to the playground, he should get to go more often. Keep a chart of good behavior and chores, when he fills it- go on a fun family outing, (bike riding or a nature walk or something). I wish you the best, take care.