Page 65. That was the page the girls whispered to one another in the last year of primary school as we passed the dog-eared copy of Forever around under the desks.
It's the cringe-inducing bit where Katherine meets Ralph for the first time. And yes, you remembered right - Ralph's a penis. Literally.
Katherine, a senior in high school, asks, quite understandably: "Does every penis have a name?"
"I can only speak for my own," Ralph's owner, Michael, replies.
And things get quite heated after that.
This is a frank story about losing your virginity in your first relationship. Par for the course in today's teenage novels, but when we were young, it was unbelievably shocking.
When it came to page 89, when Katherine and Michael have sex for the first time, it was almost too embarrassing a text for a giggly 10-year-old girl to carry on reading and I remember us collapsing with hysterical laughter.
Perhaps our age on reading it was why it was so very shocking to us - this was the
sex education book, the first description of lovemaking that girls of a generation read.
It's actually about an 18-year-old girl, but we read it aged 10-12, years before any of us had even kissed a boy. By the time we were 18, we would probably have considered it completely adolescent.
Reading it now, I realise I barely noticed whole sections of it as a young reader. The part where Michael teaches Katherine to ski, for instance - I don't think we even bothered to read that bit. And I don't think we cared much about the story of Katherine realising there are more fish in the sea.
Meanwhile other iconic elements of the book - Sharon and Ike's rug, for instance, on which the lovemaking takes place - and the dedication to 'Randy' - bring back instant recognition. Of course, Randy was Judy Blume's daughter, but we didn't know that when we read it and it sounded hilarious. A world away from an English primary school in 1989.
Forever is graphically educational and compulsively readable, but it's tasteful and sensible, promoting safe sex. It's a 1970s American time capsule in its description of 'sheaths' and 'VD', and it seems so innocent, in fact, by modern teenage standards.
In the current edition there's a note from Blume stressing that today, the need to protect against STDs, 'especially AIDS', would have featured, and exhorting readers to 'take responsibility' if they become sexually active.
Interestingly (and I wonder if it was deliberate) Katherine doesn't experience a shred of teenage angst. This is not an introspective book; there are no worries about 'does he love me?' or 'are my thighs too fat?' The heroine is a super-confident young woman and her first love and first break-up are like water off a duck's back. It's not the teenage experience most of us remember, but Katherine is meant to be a role model, I suppose.
The 1975 novel caused a scandal at the time and has long been the target of censorship. Like many enduring children's authors, Judy Blume refused to patronise young readers and, instead, told the truth with groundbreaking frankness - it's easy to see why she's still so popular today.
Oh, and a final 'did you know?' Forever has been blamed for a decline in the popularity of the name Ralph.
Forever by Judy Blume is published by Pan Macmillan (£5.99)
Catch up on previous reviews here:
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In ancient Greece, a baby is brought up by centaurs. As an adolescent, she's sold into slavery and escapes by disguising herself as a boy. But she ends up at the mercy of Spartan warriors, surrounded by war and violence. A novel by a mother-and-daughter partnership, Louisa Young and Isabel Adomakoh Young.</p>
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Published in 1868, this is the story of four sisters Meg, Jo, Beth, and Amy, who are growing up in New England, fatherless and impoverished, at the time of the Civil War. What makes the story so compelling is the sisters' very different characters. Memorable first line: 'Christmas won't be Christmas without any presents.'</p>
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- I capture the castle
<a href="http://www.amazon.co.uk/I-Capture-Castle-Vintage-Classics/dp/0099460874/ref=sr_1_1?s=books&ie=UTF8&qid=1302103802&sr=1-1" target="_blank"><strong>I Capture the Castle</strong></a> by Dodie Smith (Vintage Classics, £7.99)<br />
Written in 1948, this is the diary of Cassandra, 17, who lives with her eccentric family in a dilapidated English castle. Two Americans, Neil and Simon, arrive to take possession of the estate on which the Mortmains live. A romantic, coming-of-age novel.</p>
- How I live now
<a href="http://www.amazon.co.uk/How-Live-Now-Meg-Rosoff/dp/0141318015/ref=sr_1_1?s=books&ie=UTF8&qid=1302103866&sr=1-1" target="_blank"><strong>How I Live Now</strong></a> by Meg Rosoff (Puffin, £6.99)<br />
Fifteen-year-old Daisy is sent to England from New York to spend the summer with her cousins Isaac, Edmond, Osbert and Piper in a rambling English country house. But when war breaks out, life changes forever...</p>
- Witch child
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It's 1659 and Mary, the granddaughter of a witch, keeps a diary. She sees her grandmother hanged, is rescued by a stranger and sails to a Puritan community in America. There she gets caught up in witch trials that fuel suspicion, rumours and secrets.<br />
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Seventeen-year-old Bella Swan moves to Forks, Washington to live with her father. At school, Edward Cullen seems particularly unfriendly. The reason? He's a vampire and is trying to protect her from his hungry desires. Repressed passion continues in New Moon, Eclipse and Breaking Dawn, so your teenager will be obsessed with self-denying bloodsuckers for weeks.</p>
- The bell jar
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Sylvia Plath's only novel, published in 1963, is the story of Esther Greenwood, who longs to be a writer. She begins a summer internship at a magazine in New York City, but doesn't fit in. Back home, she suffers a mental breakdown, feeling as if she is trapped in a bell jar. A clever, witty and bleak portrayal of the pressures on a young woman in the 1950s.</p>
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Winner of the Pulitzer Prize for Fiction in 1988, Beloved is the story of Sethe and her youngest daughter Denver as they try to rebuild their lives after running away from the Sweet Home plantation. Who is Beloved? What is Sethe's secret? A novel about mother-daughter relationships and the psychological impact of slavery.</p>