6.) A friendship doesn't form between two members of the opposite sex without one of them having feelings for the other at one point.

Describes the the common phenomenon regarding relationships between two members of the opposite sex. Proven true time after time, it has caused heartache of many men and women through the centuries. The abbreviation "Rule #6" comes from a list of advice posted online where this particular piece was 6th on said list.
"Carly has feelings for me, but we're best friends- I don't want to be anything more. I guess Rule #6 is striking again."

Person one: "Hey, where's Max?"
Person two: "I don't know, we're not everywhere together all the time."
Person one: "It seems like it, you better be careful before Rule #6 strikes him down."

by Kellzisalie January 27, 2009
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Generally accepted internet rule that states that Anonymous can be a horrible, uncaring monster, so prepare yourself for the concequences of posting a new topic.
Rule 6 in action:
/b/ poster: Hey /b/, I just finished making this hat for a friend! What do you think?
Anonymous: I think you don't have any friends. Enjoy your hat.
by danthaman15 June 13, 2009
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a stoners definition to a total looser who is almost unbearable to hang out with and the only exception to hanging out with him is "the 6 gram rule", meaning you are never to hangout with him unless he has 6 grams to smoke with you and your friends.
friend #1: Hey guys keith wants to chill with us tonight.
friend #2: Does he have 6 grams?
friend #1: Uhh, let me check.....No...
Friend #2: "6 Gram Rule" no exceptions.
friend #1: Okay il tell him to just fuck off.
by JollyRogerWeenis May 22, 2005
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Basically this rule states that you have to take a shit within 6 seconds. If it takes you any longer than 6 seconds, it's considered a bad day. So you better start pushin!
Whenever I'm on the phone with my friend I use the 6 second rule so she doesn't have to wait very long.
by EmAlinator October 5, 2010
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There is no such thing as too young.
An example of rule 6 is if your 20 and your partner is 45.
by Misc Hobo October 3, 2008
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When one team looses by 6 cups in a 10 cup game of Beruit, the winning team has the option of making the other team take off their shirts for five minutes.

Mark: Yo Fran, Stacie and Amanda are taking off their shirts
Fran: 6 cup shirt rule?
by Fraun December 2, 2007
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