A person, typically a child or a young teenager, who is a Republican (or otherwise conservative) just because their parents are. Usually has no real understanding of the issues, and must resort to yelling and logical fallacies to defend their parroted views.
Did you hear that tween support Bush's use of torture? Man, he's such a Republiclone.
The kind of involuntary sleep you experience when you're really tired and trying to stay awake in a monotonous situation, like a class lecture. One minute you're propping your head in your hand, trying to pay attention, when all of a sudden you're out -- at least until your elbow slips sideways or your head falls forward, jarring you back to attention. Caused by a consistent lack of sleep over several days. Often the cause of car accidents, when the driver nods off during long hauls.
Man, I had a really bad microsleep during trig yesterday. I couldn't stay awake for more than a minute or two.