Rule #4 is a rule that states you must respect women at all time, and you must never pressure them with unwanted romantic advances. It is used to keep lacrosse players everywhere off the shit list
Chad: "grabs chicks ass at a party"
Brad: bro what are you doing!? Rule #4 bro!
Chad: holy shit bro I'm so sorry your right, rule #4
Chad: I'm sorry that I disrespected your personal space Jill, please forgive me
by SadFart64 October 01, 2019
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No female apears to be unnatractive while performing felatio upon you.
John- "Dude that chick's ugly"
Tony- "Dude, rule 4: no girl looks bad with your dick in her mouth"
by fa-la-la-la-latio October 21, 2010
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A man who is single, and has expressed intentions of meeting a woman who has particular traits, can cite rule 4. This rule means his friends must greenlight an introduction between the two if said friends mention this desirable babe. see examples.
Friend:"So, Jim's girlfriend has this nice blond roommate and-"
single male seeking blond:"Rule 4."
Friend:"Shit... Talk to Jim about it, maybe you can meet her."

Friend:"So, this chick rear-ended me today-"
Dude:"OMG, I love Asians!!! Rule 4"
Friend:"Here's her insurance information."
by SingleGuy4956187597492 July 14, 2008
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4/1 - April's first.
No one in the entire internet can be trusted, especially on 4/1.
*on 4/1*
Guy1: ¡Oh my god , Half life 3 is coming out and Facebook buys Linux!

Guy2: Rule 4/1.
by Fasox April 03, 2014
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Any grouping of instruments and genre that you can be conceived of does exist and has been preformed (and recorded).

A musical interpretation of rule 34.
rule 3/4 as preformed by Korn and their use of the bag pipe in "Chutes and Ladders", also Arcade Fire
by X_mathman February 14, 2011
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The rule of 4 and 9 is a general unspoken rule in the United States between drivers and cops. The basics is you don't get in trouble for going 4 or less over the speed limit and usually a warning if going 9 or less. 10 miles invokes fines if caught.

the exception is at the beginning or end of a month when the cops are trying to fill their ticket books
someone else come up with a good example for the rule of 4 and 9
by ohio drivers suck May 19, 2008
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