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2.
the dull appearance someone has when they're unoriginal, under-stimulated, or in a routine.

resembling the characters of the computer game Sims.
"lets jet, these fools are simmed out."
by hijo de la ley September 10, 2009
 
1.
Getting high to a point where one acts like a character from the popular Sims computer game.
Man: Yo you were so simmed last night
Man 2: I know i was ripppeeddd
by worddd sannnnn January 16, 2009