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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!
18 Second Rule by Abarbarea February 25, 2021
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