Top definition
If it exists, it's probably in Japan.
Truman: Raw horseflesh Ice cream?
Yu Min: No Way!!! That can't be real.
Truman: Rule 38.
Yu Min: Topo!
by Elite CAT September 18, 2008
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Jun 24 Word of the Day
An exclamation made when your friends or family are teasing you to a point where you can't handle it anymore and a hissy fit is in order.

Derived from a YouTube user's famed outburst following Britney's lackluster performance at the 2007 VMA's.
Sarah: 'OMG Susan, I can't believe you are wearing the same skirt as yesterday. Oh, and by the way, EVERYONE knows what you did with Kevin on the weekend. Plus you look a little fat, are you retaining water?'

Susan: 'LEAVE BRITNEY ALONE!'
by Billy Chickenhole September 15, 2007
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2
Rule 38 is a prison offence in which someone is masturbating in public.
He got locked up because he kept doing a rule 38 in front of the female prison guard.
by Cereal KiIIer June 20, 2010
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3
Analogous to Rules 34 through 37, Rule 38 states that if something exists, there is a plushie of it, or there will exist a plushie of it. This is not a constant, but an inevitability; i.e. not all things have plushies, but come the end of time, they will.
"Half-Life 2: Episode Two had those really scary Hunter enemies; now they have them as plushies."
"Christ, Rule 38."
"WTF is rule 38?"
"It's like all the other Rule 3x's, but about plushies."

by Flatterland August 21, 2008
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4
One of Gibbs's rules from NCIS: Your case, your lead.
Tony: Aren't you going to interview him?
Gibbs: This was a case you worked when I was retired. Rule 38 DiNozzo.
by vespasegway March 07, 2017
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5
If there is a type of porn, there is a website for it.
J. Have you seen that pillow porn website?

B. There is no such fucking thing.

J. Rule 38
by Krow1125 September 14, 2008
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