Short form for stoned. Potheads have created this word as they found using short forms made it easier to comunicate with one another.
"look at you man, your fucking s'd!"
"im soooo s'd right now"
"lets get some taco bell for after we get super s'd"
"black guys eyes always look like they are s'd."
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.