Rule #101 

Rule #101 states that every single self picture uploaded to the internet has been masturbated to by a stranger at least once.

Hank: "Hey, did you see that grandma put her new profile pic up?"

Joleen: "Rule #101, buddy..."

Hank: "I don't feel so good."

Rule #101 by Kentenathien November 6, 2011

Rule 1 of Road Trips 

Don't be an asshole.

Especially if you're normally an asshole (you know who you are), try your hardest not to be one. Being a dick to anyone will RUIN an entire trip.

Guy 1: Dude, Guy 3 has been such an douchebag to Guy 4.
Guy 2: I'd kick him out on account of violating Rule 1 of Road Trips, but we're stuck with his sorry ass for another two weeks...

Rule 1 of Road Trips by VanguardVince December 12, 2012

rule of 7 

cut your age in half then add 7, that is how young you can go to hook up with someone

bob:yo you see that girl?
joe:yea but she aint in my rule of 7, she too young
bob:huh
Joe:I'm 20 half that is 10 add 7 thats 17 she only 16, thats a no go

rule of 7 by bobdoleca01 September 26, 2013

rule 121 

Rule 121: If it's a chat site, people will fuck on it.
Rule 121a: If it's a chat site and people haven't fucked on it, they will, no exceptions.

Hey dude, I just went on Chatango and it was nothing but people cybering.
Dude, rule 121.

rule 121 by The Internet Rule Legislators September 26, 2018

brown-rule 

The unwritten law in the Northeastern US that insures that a Desi guy can never get with a hot white girl no matter how cool he is.

I got hit by the brown-rule again.

brown-rule by Parvez April 17, 2006

Lads Rule 

Used on occassions when only few people are awake at the end of a night. Those people are allowed everyone else's left over beers as this comes under 'lads rule'. If anyone refuses to give up their beers you only need to say lads rule and they have to give them up.

"We're doing all nighter so we get all the beers"
"What? No!"
"Lads Rule."
"Oh, okay."

End of conversation.

Lads Rule by Lads R00L April 14, 2010

Wikipedia Rule 

References the general theory that when a Wikipedia user is on any given Wikipedia article the user is never more than 6 clicks away from something directly related to sex, either through related articles or text-embedded links.

*Note: 6 clicks is a conservative number, in everyday practice the average required number of clicks is lower.

Wikipedia Rule example link paths:
Starting article: William Howard Taft. 1>Serial Killers. 2> Sex.

Starting article: Brooklyn Bridge. 1>Pedestrians. 2>Health. 3> Reproductive Health. 4>Pregnancy. 5>Vagina.

Starting Article: Manganese. 1>Pigment. 2>Cosmetics. 3>Human Body. 4>Male Reproductive System.

Wikipedia Rule by Siddarthan October 2, 2010