1. A being or person whose extraterrestrial exploits end in negative results for those around them within their interpersonal relationships.

2. That person who cuts you off quickly from a parking space you obviously were going for before them.
"Darth Vader is the biggest Space Asshole ever, Bigger than Xenu, Cylons, Q, The Borg, and Zorak combined! I mean the guy starts a dictatorship, abuses his pregnant wife, kills children, cuts off his own son's hand, chokes people With His Mind, holds his daughters planet hostage for information, then blows it up anyway. What a Space Asshole"
by Premier122 July 11, 2008
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