Adam's parents were going on holiday to France for a month to visit his grandparents, and he they decided that he should stay at his aunt's house while they were gone. He had no problem with that, especially since his aunt, and his three cousins, Sarah, Jessica, and Luke were great fun. His parents hugged him and then drove off. He knocked on the door and his aunt opened up immediately.
"Oh hi Adam. Come on in. It's so nice to see you. Just go on upstairs, and unpack your things. We're going to the movies in a few minutes." He went up and spread out his things in the spare room. After greeting his cousins and getting changed, they all went to the cinema. Then his aunt decided that they would eat dinner at Pizza Hut, and when they got back it was time for them to sleep. They all raced each other upstairs, and while his cousins went to get changed, his aunt held him back.
"Adam, stay there for a second. I want to talk to you."
"Yeah?"
"Well, I have a little family secret to confess to you."
"What is it?"
"Basically, your entire family have sex." Adam was sure that he misunderstood her.
"What do you mean?"
"Well it's a family tradition that's been going on for a long time and we have sex for fun. The women all use contraception so there's no chance of babies."
"Well, how come my parents don't have sex, then?"
"You're parent's didn't use contraception and ended up having a child. They don't want their children to do the same thing even though we still use contraception."
"Oh OK. Well, why haven't you done it before then? I've stayed here tons of times, but you've never had sex before."
"That's because you've only stayed here for a day or two, so we could easily just stop for that long, seeing as your parents wouldn't approve. But this time you're staying for a month and that's a long time. We can't suppress our sexual desires for that long. Look, if you don't want to do it, we'll try and keep the noise down and we'll give you earplugs so you can sleep."
"No, no. I think I'll do it."