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Invertible

In linear algebra, an n-by-n square matrix A is called invertible (also nonsingular or nondegenerate) if there exists an n-by-n square matrix B such that:

AB = BA = I (where I is the Identity Matrix).

Otherwise, in life, it refers to the case where something can be transformed into something else and transformed back.
Randy: Sally is so invertible; real marriage material.

Sandy: I know, nonsingularly so. Put a few drinks in her and you can get her on her back and yet in the morning she still gets up and cooks you breakfast.
Invertible by Len Bakerloo July 6, 2016

insatiable 

adj. cannot be satisfied; must have more
Tyrone masturbates three or four times a morning while he is shaving or showering in preparation for spending the day with Brie Ann. He can lay with her for hours and bust even more nuts, so it is safe to say he has a sex drive that is insatiable.
insatiable by Richard Black May 4, 2005

insatiable 

someone who is never satisfied about anything, AKA: an Urban Dictionary writer
Me: Ah, I really explained insatiable pretty well! Now, to define hypocrit- wait a second...
insatiable by / Gnon / July 1, 2019

Insatiable Birdie 

A sex act performed by fucking a man in the ass in missionary position while leaning over and blowing him at the same time. It can be performed by either another man or a woman with a strap-on (see Pegging).

The act is named for its similarity to the motions made by the toy heat engines named drinking birds, insatiable birdies, or dipping birds.
Getting fucked in the ass with a strapon is great by itself, but the Insatiable Birdie is MIND BLOWING!

Insatiable Taco Bell Eating Syndrome

Also referred to as ITBES, this is a serious psychological disorder. It doesn't really matter if you catch it early on or not, as unfortunately, there is no cure. Common symptoms include, but are not limited to:

- Irritability when passing a Taco Bell and not purchasing a Taco Bell product.
- Craving Taco Bell 24/7.
- Trying to make a Taco Bell substitute at home. When the chef with ITBES fails, he or she will throw the taco creation at the wall, screaming "THIS WILL NEVER BE GOOD ENOUGH! I NEED TACO BELL NOW!" (or a variation of this phrase).
Coping with Insatiable Taco Bell Eating Syndrome has been tough. Taco Bell is my nicotine, and unlike cigarettes, I cannot walk into any store any buy it.

I must always be within 20 miles of a taco bell, or I will become sick and irritable. For long road trips, or plane flights, I will pack multiple faux-"Crave Cases" as I call them, in order to make the journey until I am in close proximity to another Taco Bell.

Insatiable vagina 

the action when what little reason and logic there was to begin with goes out the window if dance or sex is involved
amber knew she should social distance but her insatiable vagina meant she was going dancing anyways
Insatiable vagina by 121peekon October 8, 2020
More from Urban Dictionary

proper lad 

a lad that is such a lad that he is a proper lad
person1:did you see bob
person2: ya he was a proper lad
Word of the Day on October 29, 2026
The number of years you are still sexually active
While our lifespan is the number of years we will live, our healthspan is the number of healthy years we will have and our sexspan is is the number of years we will continue to be healthy enough to continue having an active sex life.
sexspan by Dr Kat April 21, 2022
Word of the Day on October 28, 2026
A lighthearted reaction upon receiving disappointing news of some sort. Usually something that isn't a particularly a big deal, esp. when it primarily affects someone else - sort of a mild schadenfreude. Sometimes doubled or tripled, and possibly said in a sing-songy voice for added comedic effect to imitate a muted trumpet, which is how the meme originated.
You didn't get any napkins with your takeout pork fried rice? Womp womp.
womp by 175623226 November 3, 2011
Word of the Day on October 27, 2026
When your wife’s boyfriend let you sleep past 8pm 😎😎
Wife’s boyfriend: You have 5 more minutes
Me: Poggers!
Poggers by Just_Charles April 14, 2020
Word of the Day on October 26, 2026

Oblication 

A vacation, feeling more like an obligation, that involves visiting or staying with family.
So Joe where are you taking the kids for spring break vacation? We are going on an oblication to Boca to visit my mother-in-law.
Oblication by kimmerr May 5, 2011
Word of the Day on October 25, 2026

Surf Dracula Syndrome 

A phenomenon in film/television series, most notably streaming series, where the main premise is drawn out to such a point that it takes an entire season or more to get the parts of the series the audience is actually interested in seeing.

For example, if a series is titled "Surf Dracula," a majority of viewers would tune in expecting to see Dracula surfing by the first or second episode. However, the entire first season would instead be tedious padding and backstory before finally ending with Dracula surfing in the last five minutes of the season finale.
I watched "Smallville" on Netflix the other day. Dude, it was ten seasons of filler before he finally flew! Major Surf Dracula Syndrome!
Word of the Day on October 24, 2026
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