I know my nephew is a little young at 5 years old to be considered a jerk, so I'll just call him a brat. But it really is my sister-in-law's and my brother-in-law's fault. They let him get away with murder. This kid has more toys than Toys 'R' Us, eats crap food because that's what he wants and the only thing he'll eat, hits people and barely gets scolded for it. My sister-in-law will threaten to spank him and he'll laugh because he knows 9 times out of 10 that she won't. It is so frustrating to watch because you just want to give the kid one good kick in the rear after a couple of hours of him running around our house breaking things, jumping on the furniture after being told numerous times not to, torturing our dog and laughing about it, etc... There is only so much a person can take. I tell you, that kid would not be acting like that if he were my son.
Well, not even half way through his first week of kindergarten this week he got called into the principal's office for punching a kid in the face. Eveyone in our family called it, too, although, we thought it would take about 2 weeks for the call.
The thing that irks my wife and I the most is my sister-in-law expects the school to whip her son into shape, because she is so tired of "trying". I love my nephew, but she had him later in life at 42 and uses the excuse that she's too tired to get up to dicipline him. If you're too tired to get off your butt and dicipline him each and every time he misbehaves, maybe you should have thought twice about having another kid. You aren't doing him any favors by letting him think he's king of the world.