ISOS

An acronym for the notable alternative rock band In Search of Sasquatch. Formed in 2010, in the one and only Calgary, Alberta. Consists of four young lads and is soon to be the most commercially successful act in the history of music.

Person A: "Did you see ISOS perform today?"
Person B: "No, I missed it. How was ISOS?"
Person A: "Pretty good if you know what I mean"
Person B: "I'm kidding, I did see ISOS perform"

ISOS by lvl5laserlotus December 11, 2012

Isoscuse 

An excuse able to be executed as the result of The Virus.

I couldn’t buy a present because, you know, pandemic = Isoscuse
Sorry I can’t return your <insert borrowed item> because I can’t leave the house = Isoscuse.
I can’t take the dog for a walk because I can’t find a face mask to fit him = Isoscuse

Isoscuse by El Asto April 8, 2020

Isosceles Lock 

69 performed with three participants rather than two.

via Achewood: May 5, 2004

In a three-way, nobody sits around bored if you employ the Isosceles Lock.

Isosceles Lock by Gimpson May 3, 2004

Isosceles 

Popular UK YOUTUBER and part time shape and beta squad member isosceles (Aj shabeel) rumour has it he loves watching mr maker on CBeebies with kingkennytv

Some random waffler:Oi fam it's isosceles Whats the Pythagoras theorem

Niko: the schmuck who knows it lives in waffle town his name is camera man George

Niko

Isosceles by The waffler NDL 69 January 1, 2020

isosy 

I should of swallowed you.

son: hey mom what does “isosy” mean?
mom: I should have swallowed you.
son: damn...i was just asking.

isosy by Silvy May 9, 2020

Isosceles Triangle 

When you have a raging boner and have to piss at an angle over the toilet while supporting yourself with one arm, and thereby forming an isosceles triangle.

"Man, I woke up with a piss -boner today and had to lean over the toilet while holding myself up on the medicine cabinet. Talk about an isosceles triangle!"

Isosceles Triangle by youngbono June 16, 2016

isostacy 

A word you will likely never need, but that wasn't yet a part of urbandictionary.com.

When a continent is covered by a huge glacier, it causes the tectonic plate that it is sitting on to squish down into the liquid mantle beneath it. This displaces some of the magma in the mantle, causing surrounding tectonic plates to be shoved upwards. When the glacier melts, the plate it was sitting on rises and the ones around it lower because of the change in mass.

"Isostacy caused the sea level here to rise by 150 meters 10,000 years ago."

"So?"

isostacy by nerdwords December 7, 2011