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When you're unable to make a chick orgasm by having sexual intercourse with her, she is either moody or Grumpy (or you are really shit). The grumpski is to make her orgasm by going down on the chick and lick and play with her clitoris and vaginal region.
Last night i was rooting this chick and she was a dead root, so i went down for the grumpski.
by charles edward July 02, 2007
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