Take it serious
Copyright is the law
Don't do it
You shouldn't copyright anything. It is bad for you and you might regret it. Some people get in serious trouble for copyright. You could do your own ideas and not run the risk of being hit with copyright. But be creative think of your own ideas.
Copyright? Is It Good Idea Or Not
If you think that copying peoples videos your insane because its not a good idea. You can become really famous because of your own ideas. You can get famous off other peoples ideas but that might get you hit with copyright or you just might feel bad about yourself knowing you stole someones idea and are famous for it.
I hope you take something away from this and you know its very bad for you to copy something that isn't yours. Maybe you can make your own you tube videos and get famous on your own without having to take someones ideas.