n. A person who tends to space out often. He or she does not respond when directly spoken to. The space cadet is not necessarily a person of low intelligence or a heavy drug user, but rather one who is so easily lost in reverie that he or she loses all awareness of the surrounding physical world.
Don't bother trying to get her attention, she's being a space cadet.
A group of pot-smoking gentlemen who smoke gargantuan amounts of marijuana then go on epic adventures. They have certain hide-outs in which they smoke. This began in may of 2009 and started by two straight months of tent parties.
space cadets hideout, strom's backyard, steezy's attic, etc.