Three women are discussing their teenage daughters.

The first declares: "I was so shocked last week. I was tidying my daughter''s room and I found a packet of cigarettes under her pillow. I didn't even know that she smoked!"

"It gets worse than that," says the second mother. "I was tidying my daughter''s room last week and I found a bottle of vodka under her bed. I didn't even know that she drank!"

"Oh, it gets even worse than that," says the third mother. "I was tidying my daughter''s room last week and you''ll never guess what I found in her bedside cabinet: a packet of condoms! I didn't even know that she had a penis!"