Soberitus 

A disease caused by not consuming enough alcohol

"The last time I got drunk was like 2 weeks ago!!" "Oh dear! I think you need to go to the doctors.. It sounds like you have soberitus!!"

Soberitus by WillandClaire February 1, 2013

Severitus 

a genre of Harry Potter fanfiction were Severus Snape mentors, aprentaces or in anyway becomes a father like figure to Harry Potter.

also applies to Harry taking care of Severus

Severitus is NOT Snarry paring.

"I was reading this Severitus fic, and Snape never really hated Harry anymore, he was kinda fatherly really."

Severitus by TheSweetPrince August 30, 2007

Siberious

A word that replaces "Serious". Often used when a situation is completely ridiculous.

ARE YOU FREAKIN SIBERIOUS RIGHT NOW?

Siberious by Do It Big March 13, 2009

soberity 

A disease caused by a lack of alcohol in the system. Symptoms include logic, reasoning and the ability to say 'no' to a game of strip poker.

Can be cured by a visit to the local pub

Person A: Help! I cant distinguish the difference between a woman and a dog!

Person B: Sounds like a bad case of soberity. you'd better visit the doctor

soberity by Kris September 20, 2003

Severitus 

A fanfiction story challenge made by the author Severitus on fanfiction.net. It includes a very specific set of requirements, found at their LiveJournal page (google "severitus challenge livejournal").

Requirements:
1. Severus Snape must be revealed to be Harry's father.
2. Remus Lupin must have returned to Hogwarts for some reason or another (unless it's a 3rd year AU, in which case he's already there).
3. Harry must undergo some progressive physical change starting on his birthday. No *tada!* and suddenly he looks like Snape.
4. The story must be based mostly around Harry and Snape.
5. (Optional) Incorporate one or more of the conversations posted on the LiveJournal page. Change them however you want (it's encouraged!).
6. Make a note somewhere that it's in response to this challenge, so all the other nice people can give it a shot too, and be able to find the other challenge responses.
7. Tell Severitus that you wrote a response to the challenge! Feel free to either email them or let them know in a review on one of their stories.

I was reading a fic tagged as a Severitus, but the author didn't include all of the requirements of the challenge. They probably assumed that "Severitus" was just a fancy name for a "Mentor!Snape" fic, and never read the challenge themselves.

Severitus by Danneyland October 4, 2016

Siberius 

Greatest bloody name in history

Guy: Siberius Miyazawa is a bloody lad

Siberius by ben the lad November 16, 2016

Sibericuse 

Slang for the city of Syracuse, NY where snow is present for most of the year.

What's the weather like in Sibericuse?

Sibericuse by Aquinox February 12, 2009