SIIMA 

(Pronounced see -ma)
Stick
It
In
My
Arse/ass
The act of requesting an object to be inserted into one's anus

Is useful for a variety of objects: penes dildos or even cucumbers!!

Can be used as a request, or an adjective.

SIIMA can be used to describe someones looks, what something smelt like or to avoid an awkward situation.

'oh my god SIIMA!

Friend - 'you slept with my girlfriend?'
You - 'SIIMA!'

Friend - 'did you see that girl last night? The fat one?'
You - 'yeah she looked like SIIMA!'

You 'excuse me sir; SIIMA?'

SIIMA by SIIMA November 1, 2011

Sigma Hater 

One who possesses a disproportionate disdain for single bonds. Known colloquially as "pi snobs," these individuals are predisposed to looking down on saturated molecules.

Freddy said he wouldn't go near that 3-methyl octane, but he can't keep his hands off my heptadiene. Man what a sigma hater!

Sigma Hater by Big Diggity January 6, 2015

Six Sigma Facebook Stalking

Six Sigma Facebook Stalking simply means a measure of Facebook stalking quality that strives for near perfection. A Six Sigma Facebook Stalker is one who will find 99.99966% of the individuals they seek on Facebook (3.4 failures per million individuals sought) and are statistically expected to be able to find any existing Facebook account.

A: Have you found her fb account yet?
B: No luck. I don’t think she has one.
A: Ask Charlie to find her. He can find anyone. Six Sigma Facebook Stalking is what he does.

Six Sigma Facebook Stalking by Insert_Name June 4, 2013

Saiman Says 

Snake, Bhendilord, Lil Bhendi, Sai-man, Saimandar Waghdhare, Brown PewDiePie, CarryMinati's illegitimate son; one man, many names, Saiman Says is India's new gen Youtuber whose sole motive is to make India 'dank' as our supreme lord and prophet Luxxey Chaudhary had wished.

"Hello everybody, welcome to Saiman Says"

Saiman Says by ThisIsDefinitelyNotARedditor February 25, 2021

shimaidon Futago

shimaidon is genre in which someone is able to get their way with two sisters. Futago means literally twins, Shimadidon futago it's Shimaidon with exclusive twins

Step-sister is bland, the real thing is shimaidon Futago. Two piece of meat from the cow

shimaidon Futago by Goliathz February 10, 2021

Shimatta  

A light expletive, means "Oh, no!" or "damn!" in Japanese

Shimatta I'm gonna be fired for this!

Shimatta by HyunJoon August 6, 2008

yoroshiku onegai shimasu 

Basically, this is said as an entry-level phrase to someone you have a favorable impression with, or if you are a very 'traditional' person. Another situation you would use this, is if you were being convinced to accept someone's hospitality. I am unfamiliar with the direct transliteration, but if you wash the grammar properly it comes out to be 'Please treat me kindly' or 'Please take care of me' or 'I am in your care, kindly' something to that effect. As you can see, this phrase is a trade of trust, where you 'ask' for trust, and 'give' trust by 'placing' yourself in someone's care.

Source? My frequent visits to Japan, and familiarity with its culture.

'Yoroshiku onegai shimasu, senpai.'

- Here, an underclassman at school or work who might have previously met this person they refer to as 'senpai' (or senior, upperclassman) Implores them to continue their goodwill now, and in the future. The meeting may be in front of the senior's friends, so the person wants to be respectful so their senior doesn't lose face.

yoroshiku onegai shimasu by Taketo November 26, 2013