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S.I.U -Abbreviated form of "Slut it up" - A motto, a philosophy, a way of life.
Invented on the night of February 20th 2007, due to excessive amounts of alcohol, by the infamous two (who would later be known as Team S.I.U) K-a and Simpson.
Used in reference to the events of a big night out, a party, or in fact the entire schoolies period and so forth. Depending on the persons’ mood or disposition, this philosophy can form a pivotal role in one’s life, especially whilst youthful and/or attractive and/or intoxicated.
Usually S.I.U relates to hooking up with (preferably) a McHottie - or two, or more come to that - of the male species, but has on occasion, warranted the act be undertaken with a female.
S.I.U is used in this abbreviated format to disguise its true nature, especially around the parentals who may find the notion ‘promiscuous’ or immoral, and the males who are targeted (maintaining an innocent femininity, particularly magnetising and effective).
S.I.U can be used to convey the various stages of ‘hooking up’, all the bases and a home run are covered, depending on the person who is indeed S.I.U.
The term can be used in normal conversation, i.e. spoken, sung, chanted, communicated through sms especially when seeing a McHottie in nearby range, or over the internet i.e. msn and myspace.
The term is most prolific in the demographic of 18-20 year old females, from the Wazza region in Melbourne.
Simpson: Did you S.I.U last night?
K-a: Totally, 4 males, McHotties. No hits and misses either. You?
Simpson: Omg! Me too! Woot woot, and 1 chick too, just to even it out!

Sms message:
"Turn around, totally McHottie! Go for it, S.I.U!"
S.I.U by K-a mwa mwa 123 December 6, 2007
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S.I.U SILENCE 

You probably know the si unit of sound (decibel) but what is the si unit of silence? Pat Cummins.

Ask Pajeets for more info.
S.I.U SILENCE IS THE MASS VIRTUAL MURDER AND EMOTIONAL/MIND RAPE OF MILLIONS OF:

Pajeets, The Gobar Putras, The Jaanwar Bhakts, The Gaw maata worshippers, The Cow Dung eaters.
S.I.U SILENCE by HUMAYUN. December 10, 2024

T.Y.D.S.I.M.W.M.H.B.B.I.U.I 

T.Y.D.S.I.M.W.M.H.B.B.I.U.I is from the famous song Washing Machine Heart by Mitski, For example the lyrics “Toss your dirty shoes in my Washing Machine Heart. Baby, Bang it up inside.”
Person1: Hey babe T.Y.D.S.I.M.W.M.H.B.B.I.U.I
Person2: What...????😀
Person1: 🧑🏽 🦯

i.w.y.t.f.m.w.a.p.u.i.s.o.d 

I rlly dont kno :/

if anybody knows the meaning plz tell me and i will edit this 😭
This part can't be blank so I'll still be waiting for someone to plz define this for me if you know what it means. I will change it when I see the meaning in the comments 😉🙂 "i.w.y.t.f.m.w.a.p.u.i.s.o.d"

I.W.Y.T.F.T.S.O.O.M.T.I.S.U.N 

I want you to f**k the sh*t out of me until I scream your name
Guy: hey what do you want to do tonight

Girl: I.W.Y.T.F.T.S.O.O.M.T.I.S.U.N
Guy: *in shock and smirks* say less

S.U.I.T. 

It's when you go to the OB-GYN doctor and discovers you have S.U.I.T. Something up in There!
Myrtle: Hi Dr. can you tell me why I'm so crampy?
Dr: Yes, It appears you have S.U.I.T.
Mrytle: Suit? what is that?
Dr: I'm afraid you have "Somthing Up In There"
S.U.I.T. by Wabut April 23, 2008

i.w.y.t.f.m.u.i.s.o.d 

i want you to fuck me until i say "oh daddy"
person 1: hey

person 2: hey

person 1: i.w.y.t.f.m.u.i.s.o.d

person 2: bet