Understanding Teenagers   The chicken and egg conundrum fades
into puny insignificance beside the problem of parents and
teenagers. Which exacerbates the other?  Pity the teenagers:
their hormones are raging, their bodies are embarrassing them at
every turn, they are neither adored children nor irreproachable
adults and they need to sleep for 22 hours a day which no-one
will let them do.  Or pity the parents: their cherished little
darlings have morphed overnight into hulking lumps of
sullenness, who flinch at the sight of daylight and from whom
their parents are lucky to extract the occasional grunt or
uncooperative gesture.  Remember that the one weapon you have
over a teenager - and it must be used judiciously and deftly
otherwise you will blunt its edge - is embarrassment, an emotion
which dogs every teenager, every hour of the day. "Just joining
in the fun," is a phrase to chill every teen's blood - try not
to use it in front of their friends, merely threaten to use it
in front of their friends if they d