Black Hole is the perfect teenage graphic novel. It is sexy, scary, weird, sad and cool. It is about as messed up as it's posible to get when representing a semi-normal world.
It has angst about catching a strange S.T.I. (sexually transmitted infection), not just on a normal level, but on a kafka-esque 'One day Gregor Samsa woke up and found he had turned into a beetle' kind of strange. Catch it through sex and it will warp and change your body in a random way, probably leaving you disfigured or looking like something that's come out of Lovecraft's imagination.
For all that, this is still a very honest reflection of the normal worries of teenagers - who the cool people are, who you fancy that doesn't fancy you, money, love, school.
Why is it called Black Hole? Perhaps that extra orifice that occurs. Perhaps the abyss you can sink into with love, or the abyss of despair, or living in memories. Take your pick.
I think this is something most teenagers should read. Not the ones who worry too much (talk about tipping over the edge..), but the supposed cool, or together, or smart, or silly, the air-heads and jocks, the geeks and slobs, anyone and everyone can relate to this.
And for those parents who've forgotten how alien the world seems when you have triple levels of hormones rushing through your veins, and who need to relate to their own teenagers, this is for you too.