someone who makes stupid mistakes or acts like they have half a brain on occasion, though is generally an intelligent person.
formed from an abbreviation of SPecial EDucation and the word MASTER to clarify just how extreme of a sped that person is.
me: 'i got in the shower last night, and it was really foggy, even though the water wasn't very hot.... it took me like 30 seconds to realize that i was still wearing my glasses. >_>'
Guy/Girl who wants all the weed you are smokin' with your friends for himself. Also, he breaks the holy weed-circle & your chill.
Michael: Here you go George, your turn.
Selfish Weedmaster: It's my turn Michael.
Michael: But you just smoked!
Selfish Weedmaster: I don't care, give me the weed asshole!