Too drunk or stoned to move. In a vegetable like state. Refers to the look of Terri Schiavo, who in March 2005 was involved in major supreme court rulings on whether or not she would remain living off machines, or would be put to rest as her husband says she wanted.
When you or someone else gets WTF Pwned and turns into a vegetable, much like Terry Schiavo. She was the chick they pulled the plug on although the dick husband wanted to make her suffer.