watershed 

used to describe when something awkward happens that totally changes the mood

(two dudes talking to each other)
A: "Dude the other day I couldn't find any short sleeve shirts or shorts to wear and it was so hot"
B: "That sounds so hot"
A: "Watershed"

watershed by zanilove June 29, 2008

Watershed 

British Nine o'clock p.m., the dividing line between "family" television programing and "adult" programing. Programing unsuitable for children is broadcast after the Watershed.

He's addicted to porn and he won't bother turning his TV until after the Watershed.

Watershed by Erik Ritter December 16, 2007

watershed moment 

If ever this is used in an official market announcement by AVZ management then this is the best sell signal the market will ever give you. You could not possibly hit the sell button quick enough, I kid you not, sell and buy back at about half the price. If you see "in a matter of days" in the same sentence, then you'll want to smash that sell button harder than I was when I first saw Samantha fox as a teenage boy.
It is indeed a 'watershed moment', albeit not a positive one.

“The receipt of the Ministerial Decree to award the
Mining Licence is leading to a watershed moment for AVZ and our partners, with the official award of
the Mining Licence from CAMI expected in a matter of days.

watershed moment by wolfofasx June 26, 2022

Juneau Watershed 

When you are performing cunnilingus on a pregnant woman and her water breaks.

Last night I was going down on Sally and I was hit by a Juneau Watershed - it flushed a contact lens right out of my eye!

Juneau Watershed by Mr. Make-It-Rain-On-Them-Hoes April 28, 2010

a Cheney Watershed 

(n.) a dungeon in your basement, backyard, or barn where you waterboard immigrants, minorities, and/or the poor.

"I heard that Jim has a Cheney Watershed in his basement. His neighbor told me that every night he hears the sound of people gurgling, even though Jim doesn't have a pool..."

a Cheney Watershed by Sonny B. Lowe October 21, 2008

Watered Down 

Something that is similar to something else, but with less features. Altered so as to be weaker in force, content, or value.

The term “Watered Down” comes from when drinks are diluted with water to be made weaker. But can be applied to other things.

Arizona is like a watered down version of Australia.

Watered Down by Enviro May 7, 2020

Watership Down 

A truly epic (used in the actual sense, not the modern sense) book by Richard Adams about of a group of semi-anthropomorphic rabbits who make their way across the English countryside in search of a new home. Though built on a simple concept, it is a grand tale of adventure, full of dynamic characters, intense action, suspense, mythology and mystery.

And it's not just a kid's book. Read it, you'll fall in love with the story of Hazel, Fiver, Bigwig, Blackberry, Dandelion, and El-ahrairah.

(At library)
Jerky teenage boy: This place blows, lets go!
Librarian: Here, read this book, it's about rabbits.
Boy: Sounds gay, but whatever....
(One week later)
Boy: Holy shit, that book is f**king amazing!

"Wisdom is found on the desolate hillside, where none come to feed." -Lord Frith, Watership Down

Watership Down by thedoctor700 May 26, 2011