There is no easy answer, but it also depends on how his parents treat him. If they treat him bad, then he will retaliate and treat them bad. To me it sounds like they all need to get some counseling help, or he can call a help line and get answers from them.
Rent some cool movies that he would like, and spend nights watching the movies with him. However, teenagers tend to want space. Many adults assume this is a rude or neglecting behavior, and yell at their kids. The truth is, teenagers like time alone to calm things down and think clearly. This may involve video games and etc, but it does not mean he hates you. Yelling will only confuse them, because to them, they did nothing wrong. They are simply trying to get some clear air. The reason it is almost all day at home is that school is a lot of stress, and spending around 7 hours a day rotating classes and working is no ones idea of fun or relaxing. To teens, home is usually a relaxing resort. This applies to many teens, not all. He may not try to be rude, in fact, he may not even see this as rude. It is simply trying to relax, and parents constantly pressing their children about this stuff and other stress just gets them mad because all they wanted was to come home and forget about stress. Try to find non stressful and relaxing things he would want to go.
act like yer getting depressed, start fighting with your hubby or wife, and say that the teen started the fighting, like when he/she is sneak listening 2 your conversation and you know it, just make him feel so guilty that he apologizes 20 times, and then he/she is cured for life (: belive me, it works ;)
If its your kid you can try spending a lot of time with them so they can build trust and talk about the attitude. Find out about their friends often attitude comes from the kids they spend time with. Shower with hugs to soften them up. If that doesn't work put them on house arrest. No privileges. Not easy but remember its all temporary. good luck!
Try observing them. o.0 We teenagers are supposed to be the ever growing/changing lab experiments, rigghhhtt? Just obserrrveee... if he's being disrespectful, ground him, take away stuff he REALLY loves like the phone or a computer for a set amount of time. Each time he acts badly, add more time on to that - like a day or two more to a week. You could also do something to them in their sleep and take pics to threaten them with. :D Seriously, they'll do anything to keep embarrassing pics from escaping the locked metal box! (Most of this was intended to make someone laugh, but it is a good strategy and it probably does work. I don't think you'd get in trouble for it with Social Services because it's not physical threatening, although it might be emotionally or mentally. Idk.)
But seriously just watch the juvenile for a while and try to see what's up. Ask them, too. That might help... maybe they're PMSing and need pills or more sleep or something. o.0'
LOL Hope I helped! Or at least made someone laugh.
Teenagers are the hardest to deal with because they are going through hormonal changes.Hormones make you think and do crazy things.Stay calm,give them their space but not complete freedom,there's a difference.Inforce the same rules and include new ones if need be.Boys tend to withdraw inside and girls tend to be moody,loud,and sensitive.Boys usually need more space and girls more attention.Good luck,be patient,and most of all remember...just because you think they should know how their actions make you and others feel,they may not.Talk to them straight up.Tell them when you do "such thing" then you hurt my feelings,you make me look like a bad mother.I love you and the things i do are to help you in the end,not to embarrass you or ruin your life.And you have to control who their friends are.Bad influences can literally ruin their lives.Some parents even pack up and move to protect their kids from bad influences,which is sometimes necessary.We do what we have to do as parents.
This is to CURIOUSxGEORGE , referring to the comments off their answer. UM , I'm white, my parents used to beat me, not most "white" kids go around disrespectfully. it's based only on individual behaviour, not skin color. Don't go racist on us, man.....I mean, sir(ma'am??)