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n. similar to dumpster, but instead where happiness goes to die
n. a person that sucks the life out of the room no matter how hard you try to cheer them up
n. dark pit of despair, a black hole of unhappiness, a vacuum that sucks all hope and joy from the vicinity
MD is a grumpster because he will suck all your happiness away.
by JitteryJoe May 04, 2008
Another meaning for taking a dump.
Man I got to go take a grumpster.
by Clay Longfellow November 28, 2007