for a guy; masturbating prior to sex, so when you perform later it, last longer
(keeps stamina)
guy 1: yo i'm bout to go fuck my new girl
guy 2: don't forget the first nut rule
guy 1: haha nah, I already did it.. I aint a quick shooter
by Curtis B. September 1, 2014
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When eating in a restaurant for the first time, your First Bite creates an impression of food and the ambiance of the said place and therefore, rules over the entire experience.
I was eating at this new place, and my First Bite Rule tells me that the food there is bland and the service is below par. Lets go to another place, have a First Bite Rule, and we will see it from there if it is worth repeating.
by JSMataro February 8, 2008
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The first rule of peacocking is : don't tell the audience what it already knows.

This 'rule' refers to a maxim in social science literature that a person/thing trying to show status should not be repetitive / redundant and give the audience what they already know would happen.
John just violated the First Rule of Peacocking when giving his acceptance speech! he acted like no one knew why they were all there when he told them again about his achievements.
by Human Peacocking June 11, 2023
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The First Rule Of IT is turn off and then turn on again
The second rule is to plug it out of the power sourcce for 8 seconds and then plug it back
The third rule is to never doubt the indian technician guy
Example 1 :
when everything goes wrong with your computer remember the first rule of IT
Example 2 :

when in doubt power off and restart
Example 3 : actually a reference from the series AGENTS OF S.H.I.E.L.D Season 5 Episode 2
when jemma a lead scientist tries to avoid getting hit by an enourmess astroid she talks about the first rule of IT and puts it in a good use by powering off and powering on the space ship
by SOMBRA ON STEROIDS June 6, 2018
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