Sisef 

Sisef (n): A girl who considers having most or only guy friends a badge of honor/ tends to mention casually in a group of all girls who happen to be friends, often as an excuse for not being close to any of them and/or a way of distancing herself from Girl Talk: "Oh, all my friends are guys!"

Dialogue:
Non-sisef: "Omg, Mark is sooo cute!"
Sisef: "Oh my god, that's so wierd to me- Mark is, like, my one of my really good friends!"
See what we mean?

"Kelli is such a sisef: she actually rates other girls with the guys!"

Sisef by buddingwriter101 August 25, 2009

Sisified 

When you completely shut down someone who has no clue of what they are talking about. It is derived from the nickname of the current president of Botswana who gave a very good speech about the recently lifted elephant hunting ban in the country.

The elephant protester is Las Vegas got sisified

Sisified by Khalangaboyblaq June 1, 2019

Siseko 

Siseko is a Xhosa name given to a child that means foundation. Where something is founded on can also be a meaning.
Siseko is very strong willed and self sufficient. Very active and has very low concentration span,may come across as careless but Infact cares a lot and very conscious about his surroundings. Very smart, handsome, ambitious and confident. Usually direct and gets frustrated when things don't happen in time. Not really patient but humble, easy to talk to and very critical.
A playful charismatic guy. Siseko is very sexy guy and can make a special girl very happy, big on loyalty and honesty. If you got a siseko you're the luckiest woman ever!! Siseko is also a very shy person but burst of energy that just bounces of the wall, observant and has order. Can be very petty and vengeful. But he is such a sweet harmless!

A siseko of a relationship is Love. Siseko of marriage is honest, trust and forgiveness.

Siseko by 3lackMe May 19, 2021

sidefind

Outlandish person, or really anybody who would look like a cartoon character after a wardrobe change. It comes from the "Where's Waldo" series; there are bonus finds the reader can look for if they tear through all the main finds. Sometimes these bonus finds are characters that look absolutely ridiculous, like a pirate smoking a long white pipe, with a cutlass hanging from his belt and a bandolier of bullets strapped to his chest. Equivocally ridiculous people are called sidefinds. This terminology is used in the "Tasty Pint" blog.

CH: Dude, check out that old lady eating Taco Bell!
BJ: Now THAT is a sidefind...
CH: ...Totally sidefindish.

sidefind by Chapter H March 5, 2008

sisifony

the act of trying to be sexy but failing miserably

Drop your sisifony act if you want her to drop her pants.

sisifony by ImaginaryDoor818 January 28, 2022

Siefer Math 

The math used to determine whether or not Outbound is up or down on cases.

Utilizing Siefer Math, Outbound cases are up 1,738 even though carton length was 25-inches with Scotts on three lines and big Sterilite on the other with tile and four-foot Philips coming through CCS.

Siefer Math by LLD-NLD-4419 June 22, 2018

Sidefruit 

When a male's low hanging "fruit" is hanging to the side.

Check out Tom Jones' sidefruit! OMG his pants are so tight!

Sidefruit by jwbmt May 6, 2014