18 Second Rule

1. The term designated to the average time it takes a doctor to interrupt a patient who is describing their own symptoms. Coined in 1984 by Beckman and Frankel in the Annals of Internal Medicine. This is used by doctors to control the flow of pertinent information regarding the symptoms, keep focus on what's important, and keep the conversation brief.

2. An informal term designated to how much time it takes in average for a person or animal to completely empty their full bladder unimpeded and without forcing it. Briefly mentioned by the show Mythbusters during the testing of the myth "Peeing on Third Rail".
1. The patient may ramble on about their daily lives, but you gotta know when and how to intercede. In average, doctors learn when to speak in the examination at about 18 seconds. This is known a the 18 Second Rule.

2. Did you know that it takes you the same time to pee as an elephant does regardless of the fact that it's bigger than you? 18 Second Rule, man!
by Abarbarea February 25, 2021
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January 18

Tanya

Bitch
If you are born on this day January 18, you are most Likely an asshole or a bitch, you are selfish, evil and love hurting people. If you don’t get your own way you end up crying and make people believe you and what you wanna say even if it is a lie.

My mother is born on this day and she is the biggest lying bitch I’ve ever met.
by g_a_d_random November 10, 2019
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18-12

A group of kids wheelin knives
Hey Which one of you 14-10's are 18-12
by P.I.M.P.123 December 19, 2004
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18 dummy juice

im off dat 18 dummy juice!
by le che March 24, 2006
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18 Hour Parking

1. the collective secretion of mismatched chromosomes squeezed into rejected sacks of human skin.

2. white trash.

3. a place in southern Minnesota.
I drove by 18 Hour Parking earlier tonight and it made me feel better about having a STD.
by Fireball Jumper May 30, 2010
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December 18, 2020

The day that https:/www.urbandictionary.com/vote.php stopped working because some buffoon thought it was nice to define "vote.php". Ever since then no one is able to vote on new definitions, an this is now a case of Urban Dictionary Vote Fraud.
December 18, 2020... the day that Urban Dictioners will remember when their ability to vote was no longer existent.
by MST3K I like December 27, 2020
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18 minus epsilon

Refers to a girl who isn't quite legal, but, come on bro, she basically is. She is weeks away from being legal, and can be easily mistaken for 22 by your average xanax-ed out celebrity. Comes from mathematical analysis, where the phrase "minus epsilon" means "minus some arbitrarily small quantity".
Dude 1: "Did you hear that James Franco was trying to pick up a seventeen year old?" Dude 2: "But did you see her? She was totally 18 minus epsilon".
by mathmajr April 04, 2014
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