1) A slang term for Marijuana.
2) From the game Morrowind: This particularly hazardous derivative of moon-sugar is often smoked in raw form through a water-pipe by less fortunate khajiit; its victims are addicted for life and are in constant alternating states of euphoria and lethargy.
2.) A very beautiful above average looking girl/woman. Typically with a nice ass and wearing tight clothing.
2.) Guy 01: "Wow now that was Skooma!"
Guy 02: "Yeah that's some REFINED Moon-Sugar!"