the Seis 

n. an affectionate nickname for Ratty Room 6 in Brown University's Sharpe Refectory, where the brothers of Alpha Epsilon Pi eat dinner together every Wednesday at 6 pm

Jon: "Alright, I gotta run to the lab now, need to finish a Western blot."
Dave: "Are you coming by later for a little uh...a little...Ratty action at the Seis?"
Jon: "Definitely, I'll see you there."

the Seis by Railsplitter December 26, 2008

seiscientos sesenta y seis reverse card 

the cursed reverse card
if you run out of seiscientos sesenta y cinco reverse cards, do NOT use a seiscientos sesenta y seis reverse card. instead use a seiscientos sesenta y siete reverse card.

you: *uses a seiscientos sesenta y seis reverse card*
you: *summons a demon*
you: oh no

seiscientos sesenta y seis reverse card by BenSav March 16, 2021

uno seis

The one that is respected! The one that people wish they could be. The one that people hate on hard.

Uno seis is the fucking man!

uno seis by Uno Seis! January 14, 2010

Seismic Aqueous Waveform

An abnormally massive wave.
{On November 26, 2019 off the coast of Oregon (United States), 11 different satellite instruments designed to measure wave height, wave length and the direction of ocean swell systems, relayed real time and pattern delayed SAR and altimeter data providing conclusive evidence of the first ever observation of a Seismic Aqueous Waveform (S.A.W.). In the early 1800's, Sir James Clark Ross and British Naval Officer Count Fluervo of Korkyville presented an original postulate for Seismic Aqueous Waveforms (S.A.W.) suggesting that chaotic and abnormal deep sea land masses (what we now refer to as tectonic plates) were capable of colliding and dispersing an exponential quantity of kinetic energy resulting in oceanic swells up to 1950 feet high (conditions unknown at the time proximate to the mathematical equivalent/scale estimated during the Paleozoic Pangea fracturing events, circa 350 million years BC). The magnitude, span, volume and force of a S.A.W. is much greater than a Tsunami, hence a S.A.W. is also commonly referred to as a 'Supernami.'}

1. In 2019, a Seismic Aqueous Waveform was detected about 100 miles west of the California/Oregon coastline.

2. {Water cooler discussion begins} "Did you see the size of that Tsunami that nearly hit the California beaches this week?" {Conversational partner replies} "My friend, that was not a Tsunami, it was a S.A.W,, also known as a Supernami."

3. Sir James Clark Ross and Count Fleurvo of Korkyville were finally recognized for their research and position on Seismic Aqueous Waveforms (S.A.W.).

Seismic Aqueous Waveform by Charitable Disguise December 19, 2019

Seiso 

清楚 or せいそ
Meaning clean, tidy in Japanese.

Have been adopted by VTubers to mean Wholesome. Seems to be used ironically in many instances.

"She's a psychopath!"

"What do you mean? She's totally seiso!"

Seiso by Notayler September 12, 2020

Ego-Seismic 

Thinking that earthquakes revolve around you.
From Rhett & Link's Good Mythical Morning.

Link: 'I will gladly accept being a Ego-Seismic, wherever I go earthquakes flee!'

Ego-Seismic by H3NR7 June 12, 2012

Seiso 

A Japanese word which describes someone with a pure and clean image. This word would typically be used to portray the ideal Japanese beauty or an idol. Seiso can also imply a sense of wholesomeness.

Matsuri can be really seiso at times even though she’s a lolicon...

Nyanners is totally seiso, she is the most pure angel ever who would never ever steal your wife!

Seiso by Cruby September 14, 2020