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S.B.K. is short for Shit brown kryptonite, most commonly associated with ones significant other.
unfortunatly that other is not too considerate of the individuals feelings and often ends up destroying them from the inside.
Also shit brown is the combonation of both the colors red and green, like the two types of kryptonite, meaning that this significant other would empower you beyond your regular human capabilities, almost like an adreneline rush, but he/she also has the ability to control you, and destroy you, and usually does.
You do all that you can to have your S.B.K, but your S.B.K doesnt want you like you want them.
It is your ultimate demise disguise as the one you love.
guy 1: dude i just came from my S.B.K. home.
guy 2: are you alright man
guy 1: *collapses on ground and suffers breakdown after breaking down a concrete wall with his own brute force*
guy 2: dammit thats the ninth time this month, get over her.
guy 1: immposible.
S.B.K. by jabs excel April 29, 2009
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Semen Retention Headaches - Usually caused by excess build up and or back pressure of seminal fluid, into the testicles, for lack of active coitus.
Me and shortie is beefin so I gotta serious case S.R.H., but I got a fe fe that'll fix all that
S.R.H. by Smyte October 29, 2014
Related Words
simp school sex Sams swag Sus sarah slut Sophia shit
"Shits & Farts"

Continuously saying shits and farts to annoy your fiancé by using the S&F to make someone's day bad.
S&F

"Shits, and Farts. Farts and Shits." repeatedly
S&F by BuBraq4# December 25, 2015

S.I.S.S. 

Sudden Ice Shift Syndrome. An event that sometimes occurs when a person is drinking a beverage containing ice. As a container is tipped up to pour the liquid into the mouth, a mass of ice, formerly lodged near the bottom of the container, shifts under the force of gravity, causing the beverage to spill down the chin of the drinker. This phenominon is not observed when drinking through a straw.
As he mopped the stain on the front of his shirt, the young man who had just tried to pour the last of his long island iced tea into his mouth exclaimed "SISS!" (pronouncing the acronym S.I.S.S.)
S.I.S.S. by Dale Seng November 23, 2006

S.M.I.L.F 

A Sheeps mother I'd like to fuck. S.M.I.L.F
Arghhh, I saw Welshy's sheeps mom, I'd love to fuck that now!

What a sexy S.M.I.L.F she is!



A Smoke and Fuck...
Smoking a marijuana blunt with a willing partner and immediate sex after the smoking.
I had this lady who worked at McDonald's and she said she was cool with me & her having an S & F...
S & F by " D " November 23, 2016
Hamlet did S.I.K.O with George on their date.
S.I.K.O by falconhead99 March 6, 2017