I think I'd like children a lot more if they were collectable, tradable, and each had their own special attacks.

The last paragraph in the introduction of my 3rd Edition Dungeons & Dragons Players guide says:

THIS GAME IS FANTASY
The action of a Dungeons & Dragons game takes place in the imaginations of the players. Like actors in a movie, players sometimes speak as if they were thier characters or as if their fellow players were their characters. These rules even adopt that casual approach, using "you" to refer to and to mean "your character." In reality, however, you are no more your character than you are the king when you play chess.
Likewise, the world implied by these rules is an imaginary one.

Seriously though, an interesting disclaimer, no doubt in place to protect the publishers from the idiotic lawsuits from the stupid parents of imbecilic children. Harsh, but be fair now: If your whelpish offspring haven't figured out that they can't really cast Magic Missle by the time they're old enough to pry the lid off the steam tunnels maybe it's not such a bad thing that they got trapped down there for a few weeks, huh? Don't try so hard to keep imaginative books and fun video games away from your kids and put a little more effort into raising children who aren't so dumb.

Troll, on the other hand, said that to balance out that disclaimer in the introduction there should be a claimer at the very end of the book that says "Now go out and kill some people."

You'll have to excuse Troll, he's not terribly sentient.

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Disclaimer: The above paragraph is satire. Even though this webpage uses the phrase "kill your parents" several times, usually in bold type, it is done as a humorous example of unrealistic and paranoid prejudice against roleplaying games. It is only satire. There is no roleplaying game or publishing company by that name in the real world. It's all just made up in a make-believe fantasy fiction imaginary concept of an unreal idea. You should be nice to your parents and not hurt them in any way here in the real world and we really really weren't at all serious about anything we were talking about in that previous paragraph.
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Dumbass.