This is a word that me and my fiends have been using and I like the word. It means you are shit at most console games and means you have greasy fingers.
Dave: How am I so shit at this game!
Kai: Its because your skupped.
To get fucked up, get wasted, extremely high, hallucinating heavily, out of your mind, intoxicated to an extreme degree.
Mush I took those research chemicals you gave me last night whilst I was watching Eastenders and I was so skapped I thought Jane Beale was trying to flirt with me.
one step above being pwnd, it's derived from "skunk humped"... clearly something you don't want to happen. unlike pwnage, which may not be noticed by the victim, you ALWAYS know if you've been skumped; it has to be public and uber-humiliating.
"dude, don't skump me like that..."
"shit! you got skumped! GTF away!"