This abbreviation is often used in public to avoid using the word "stoney," thus reducing the paranoia experienced when one is "SB."
There are varying degrees of "stoniness" with SB being the lowest of the "stoney" levels. The levels are as follows:
SB - Stoney Baloney
SC - Stoney Comatose
SD - Stoney Dead
SC - "Stoney Comatose" at which point you feel like you can't really move or speak because of extreme laziness. However, if someone reeeeeally tries hard, s/he can get him/herself to express hunger or to stumble over to a bed to lay down. Oftentimes plans to go to a party or a bar are cancelled because even if it's only 9:30pm, it feels sooooooo late and driving somewhere else sounds sooooooooooooooo far.
SD - "Stoney Dead" is when you literally can't move or talk... when someone talks to you, you sort of give them a glazed gaze and ask "what did you say?" And even if they repeat what they said, you can't really comprehend what they are saying because your short-term memory can only remember things from 2 seconds ago, nothing more. One can identify someone who is "SD" when they aren't moving, and they can't speak or remember much of the event in a day or two.
And then there is one more optional level of stoniness:
ST - "Stoney Ticklish"
This level is reached almost at any level of stoneiness--SB, SC, or SD. ST is when someone who ordinarily is not ticklish or already is a very ticklish person reaches a stoney level and resultingly becomes uuuuuuber ticklish to the point of frantically giggling, begging, and hysterically screaming and laughing when tickled. Oftentimes someone who is ST will scream a phrase repeatedly through their laughing such as "OK! OK! OK! OK!" or "Wait! Wait Wait! Wait!" or "No! No! No! No!" or "Not THERE! NOT THERE! NOT THERE!"
The first signs of being ST are when your hands and feet start to tingle and feel super responsive to any touch. When someone is ST, usually the other people in the room take full advantage of his/her newly arrived stoney ticklishness because it's toooooo funny to watch them wiggling around, laughing and screaming out funny utterances while super high.
Hey D and K, let's go get super SB tonight!
Oh remember that party we were at the other night and we were suuuuuuuper SB?
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D: Hey it's 10:00pm already, let's go!
K: ughhhhhhhhhhhhhhh, but i can't move, it's sooooooooooo tiring. And the bar sounds sooooooooo faaaaaaar. I can't make it! Go on without me, save yourself!
D: Come on! It's still early! Let's go!
K: uhhhh... Sleeeeepy. ... hungry... i need another hit!
D: Wow, you are SC!!!!!
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D: Hey, remember the other night at that party?
K: Oh, was that Tuesday night?... yeah, i was waay SD that night... so no
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Dude! You guys were so bad the other night. I was SOOOOOOO ST and all of you ganged up on me.