Cardboard Rule 

Rules governing sexual behavior, which start out with good intentions, but when the rule-maker becomes wet said rules fall to pieces, much like cardboard.

I had a cardboard rule about not fucking strangers but when Jeremy went down on me, it totally fell apart.

Cardboard Rule by MrWigglesIII May 29, 2010

McSummer Rule 

The unwritten rule that comes into effect when McDonald's temporarily changes the price of all fountain soft drinks to $1 for summer.

The rule states that one MUST purchase a large-sized drink, regardless of the situation. In theory, this is to avoid possible fear of needing to drink more and teasing. Some may even buy a large drink simply because they are afraid of not getting every penny's worth of soda.

A: Hold on Jeff, let me go get a large coke.
B: I thought you were trying to lose weight.
A: Hey, it's cheap, and that's why I'm getting one.
B: Why get a large though?
A: Dude, it's the McSummer rule!
B: Whatever. You're not actually gonna drink the whole thing are you?
A: 'course not........just don't question it.

McSummer Rule by drinkupordie June 23, 2010

Cropping Rule 

The tighter the crop, the fatter the chick.

According to the cropping rule, if you only see eyes to lips she's at least 350#.

Cropping Rule by Pussbucket January 21, 2011

backpack rule 

It's getting harder and harder these days to determine whether or not a girl is old enough to be checking out. Girls from ages 15-21 can all look the same these days. If a girl is wearing a backpack(like a hello kitty one), chances are she's too young and you should look away before being called out for being a creeper. If she has no backpack than it's safe to look, but still be cautious if you choose to engage in conversation.

Benji- "That girl is cute but she looks like she might be young."
Joe- "Gotta use the backpack rule."
Benji -"What's the backpack rule?"
Joe- "If she's wearing a backpack she's too young."

*Hot girl walks in*

Joe- "See man, no backpack... she's fair game!"

backpack rule by thanks babe March 29, 2012

shane rule 

Unofficial addendum to Robert's Rules of Order, invoked when no one in the room actually knows anything about the current topic of conversation. Once invoked all discussion of the named topic must cease and a new topic of conversation should be chosen.

"Chicken eggs are unfertilized that's why they don't hatch."
"Why would they be laid if they weren't fertilized? The chicken just needs to sit on them and then they would turn into chicks."
"Do either of you know what you're talking about?"

"No."
"No."
"Shane rule!"

shane rule by H. Welles July 15, 2014

Curved Ruler 

A legendary device, said to only be wielded by those exhibiting extreme intellect and skill. Some believe that it is more suited for artistic purposes than arithmetic. Others believe it is a panacea for any problem.

Sir Rodger cursed himself for not remembering his curved ruler when he attempted to craft a silly sketch.

Clint used a curved ruler to finally understand women.

Lee had no idea why he existed, but with the curved ruler, he had purpose.

Curved Ruler by Ânonymous March 11, 2015

FedEx Rule

To have sex with someone else after recently breaking up with your ex. The faster you move on, the faster you get over them. Like FedEx (fast shipping/movement, fast delivery).

As Jenna was heartbroken over her recent break-up, she applied the FedEx Rule to herself and was over her ex in a week.

FedEx Rule by thatoneguyfromthe90s April 8, 2016