space cadet

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.
On this page, you will find 30 slang terms related to space cadet. Some of the top words include: social retardation, jughead, lalu, Variable, ass, and 25 more.