My son is a handful, everyone knows he is... he's a lovable little lad sometimes and he can have people in stitches with laughter at times but other times he's rude, cheeky, naughty...way beyond that of a normal 6 year old, he is well known amongst the teachers (and parents!) at the school.
What worries me more however is his obsessive behaviour, for instance when he was 4 or 5 he started kicking up a huge fuss everynight in bed saying he needed his neck warm, this basically meant the covers being pulled up to just the right spot on his neck. Now he needs his covers straight...perfectly straight quilt which lies over him before he will let you out of the room. He's a nightmare with his shoes, they're velcro and have to be pulled to a certain tightness over his foot before he will walk, same with his cap, it has to be a certain tightness before he will "accept" it.
He's obsessed with drinking, if I buy cartons of fruit juice (the big ones) you can guarantee it won't see anymore than one breakfast as he's continuously drinking...if there is no fruit juice it's milk, if theres not enough milk it's water...as long as he's drinking. They take a water bottle to school with them and his is completely gone BEFORE he gets to school.
There are lots of examples, he'll continuously take off his shoes saying that something is in them or they're not tight enough and if his 'conditions' are not met he kicks up a huge fuss, shouts and screams, throws things and turns violent.
Just a spoilt kid testing his authority or something more?