Life lesson.
One thing my parents have always told is just always tell the truth. If you want to do something and you think They're against it, its easier to just be honest and nice and ask. If you want to go somewhere or do something that your parents usually are tedious about and you try and lie and say your doing something else and try to get away with it, it isn't going to work. They will find out. If your honest enough and just ask and don't scream or freak out about the situation and talk like an adult and offer compromise then it will all work out somehow one often than not. Thats one thing They've taught me.