Just read everyone elses responses and still feel the same...you know your son as well as anyone, if he tends to have a little temper or gets angry when in trouble (seems a little spiteful) chances are...he IS upset because he is in trouble and will give you a run for your moola. Children at the age of 2 are VERY intelligent have the ability to manipulate to have their needs met at infancy so why couldnt they have the ability to act spiteful at 2? they may not fully understand what they are doing, thats why you have to nip in the bud QUICK. that way it doesnt form to habit, but its very possible he is working you, plus he has an older sis? right? kids with older siblings tend to be even more advanced, learning from them.....