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The act of discharging feces from the body into/onto whatever one desires.
While sitting at the dinner table with a loved one, "Excuse me please, I must go drop a dumbo"

"Man, bruh! I done gone dropped a dumbo in yo clean ass toilet!"

"Oh-em-gee Stacy and Haley! I totes have to drop a dumbo! Come to the bathroom with me because I totes can't go by myselfskees! "
by Cycle21 January 13, 2015
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