Girl 1: "I hooked uo with Brian last week"
Girl 2: "So did I! Now we are shaft sisters girll"
Girl 1: "PERIODT"
Girl 2: "So did I! Now we are shaft sisters girll"
Girl 1: "PERIODT"
by badbitch123456 January 30, 2021
Get the Shaft sister mug.Standard Sister-in-Law Unit
noun
*| \ ˈsta-ndərd ˈsi-stər-in-ˌlȯ yü-nət *
Abbreviation: SSILU
Symbol: 𝓢 or SIL
Definition:
An unofficial unit of mass equal to 300 pounds (136.08 kilograms), used to simulate high-risk, real-world human load scenarios in mechanical, structural, and transportation systems. The SSILU is commonly applied to test the failure thresholds of furniture, vehicle seats, elevators, bicycles, airline cabins, and public patience.
Etymology:
Originated in post-war American slang, the term is derived from the stereotype of a loud, heavyset female relative—often portrayed as emotionally volatile and structurally compromising—whose presence tests both family dynamics and infrastructure load-bearing capacity. While non-literal, the “sister-in-law” archetype evokes maximum physical and psychological mass concentration in civilian environments.
Technical Classification:
Measurement Type: Anthropomorphic Load Unit
Mass: 300 lbs (≈ 136.08 kg)
Field Use: Structural stress testing, emergency engineering simulation
Design Benchmark: Most consumer goods are not rated past 0.8 SSILU
noun
*| \ ˈsta-ndərd ˈsi-stər-in-ˌlȯ yü-nət *
Abbreviation: SSILU
Symbol: 𝓢 or SIL
Definition:
An unofficial unit of mass equal to 300 pounds (136.08 kilograms), used to simulate high-risk, real-world human load scenarios in mechanical, structural, and transportation systems. The SSILU is commonly applied to test the failure thresholds of furniture, vehicle seats, elevators, bicycles, airline cabins, and public patience.
Etymology:
Originated in post-war American slang, the term is derived from the stereotype of a loud, heavyset female relative—often portrayed as emotionally volatile and structurally compromising—whose presence tests both family dynamics and infrastructure load-bearing capacity. While non-literal, the “sister-in-law” archetype evokes maximum physical and psychological mass concentration in civilian environments.
Technical Classification:
Measurement Type: Anthropomorphic Load Unit
Mass: 300 lbs (≈ 136.08 kg)
Field Use: Structural stress testing, emergency engineering simulation
Design Benchmark: Most consumer goods are not rated past 0.8 SSILU
“She hit the fitting room like a breaching whale—1 Standard Sister-in-Law Unit (SSILU) 300lbs in full stride, swatting children aside and hollering ‘THESE SIZES RUN SMALL!!! while nearby store associates quietly begged for a swift death
by Ludwig Von Snooterman June 7, 2025
Get the Standard Sister-in-Law Unit (SSILU) [300lbs] mug.by The Smartest Spunky Monkey July 3, 2025
Get the Ariana (Big Sister) mug.Gay: 1: omg look he’s so cutee *shows pic*
Gay 2: oh girl he’s a sister..
gay 1: what?? He doesn’t even look like one..
*blocks to avoid bumping purses*
Gay 2: oh girl he’s a sister..
gay 1: what?? He doesn’t even look like one..
*blocks to avoid bumping purses*
by Bakesbykay March 7, 2025
Get the Sister mug.The TBHK AU where Kou is really sad and a tree kills his sister and stuff.
I have a really bad addiction to it.
I have a really bad addiction to it.
by poIaris December 31, 2022
Get the Tree Sister mug.by gmoney2904 December 8, 2017
Get the Texas Sister mug.The person I did last night
John: I saw u in my house last night
Carmine: yea I was doing ur sister
John: GET THE FUCK OVER HEAR
Carmine: yea I was doing ur sister
John: GET THE FUCK OVER HEAR
by Iwasinurmom May 13, 2021
Get the Ur Sister mug.