my sweet little 2 year old has been replaced...

by a 3 year old devil child! i just dont know what to do with him. most days now he is an obnoxious and rude little being. if there is a boundary, he will test it... if there is a chance to talk back, he will do it.... if there is a way to harass sister, he will accomplish it!!! and it is grating on my EVERY nerve. i guess the upside is that he is going to be a determined go-getter type of adult who will reach every goal.... if he makes it to adulthood without mommy banishing him to his room for all eternity! (dont put it past me ;)