Your school's annual day where clothing is optional and nudity is allowed. Some students aren't brave enough to go fully naked, but many will go at least partially nude - i.e. in their underwear, or shirtless. Over the course of the day, many students gain the confidence to strip down more and more, ending the day wearing much less than they started with.
Jacob: Are you doing Naked Day this year?

James: Yeah, for sure! I'm going completely naked! What about you?

Jacob: I might wear just underwear.

James: Okay. I hope Amanda goes fully naked again this year!
by naked streaker August 06, 2019
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A day when you are the only person who turns up to
work (e.g. a public holiday, graveyard shift, or similar),
and no one else is going to be around, so you decide that
it's safe to declare the whole day clothing-optional.

Can be done for reasons of heat, humidity, & comfort;
or out of sheer apathy.

Embarrassment through discovery optional, not necessary.
The Nick Earls Novel "Zigzag Street" has its lead character
at work one day, working late. The air-conditioning is off,
the building is stuffy. Richard decides that, in addition,
to giving himself a Naked Day. And to dance around the
office, whilst in the buff.

He is discovered.
by ChrisGrrrr June 07, 2007
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The last week in June when people who are in the porn scene movement and the porn hippie movement have there festivals in the nations national parks where they all get together and take all there close off and can run through the woods with there bare naked asses and fuck all they want.
by Deep blue 2012 April 12, 2010
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It's National get naked day!
So go out and get naked my friends!

Have fun!
P1- Hello!
P2- Get naked!
P1- Why?
P2- It's National get naked day!
P1- Okay!
by ImADummy June 21, 2021
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April 19th is the day you send half naked pics to someone you are comfortable with, but not so close to send your nudes.

You could send these pics to your boyfriend, girlfriend, best friend or someone you have a thing with and you can post them on you social media as well BUT YOU CAN’T SEND THEM TO YOU EX.
Person 1: “Happy National Send Half Naked Pics day!”
* send the pics to Person 2*
Person 2:”Awww you mad my day! Happy National Send Half Naked Pics day to you too”

*send the pics to Person 1*
by ITSBROWNG April 18, 2020
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