Oh, the unmitigated joy that accompanies these precious moments! Perhaps a recent example might best illustrate the phenomena:
Parent: Good morning, Child X!I try to maintain good humor and a longer-range perspective through this phase, which I see as "hormones meeting drive for independence." This is the age in which teenagers subconsciously begin to define themselves through distance, or as the antithesis of some aspect of their parents.
Child X: (unresponsive)
Parent (repeating): Good morning, Child X!
Child X: LEAVE ME ALONE!
We have already survived two of these phases with our oldest children, and the fact that this period seems to last about a year lessens the severity of having loving children turn into churlsh, self-absorbed cretins.
Still, I suspect my own father would have whooped the tar out of me had I said some of the things that have come out of my children's mouths.
Then again - maybe I am minimizing and glossing over my own Cranky Years.