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1.
The distinctive form, texture and experience of bowel movement produced after ingesting several cups of vegetable oil a day.
Man, I was experimenting with non-water liquids that can safely be drunk in significant (nearly water-like) quantities and ended up shooting sloppy rockets all night.
by Trollinglurker March 13, 2010
 
2.
A sloppy rocket is phrase used to refer to the resulting bowel movement of drinking several cups of vegetable oil in a day.
Person 1: Vegetable oil. Won't hurt you to drink several cups a day. Good luck actually accomplishing that however.

Person 2: do your poops shoot out like rockets?

Person 3: Sloppy rockets.
by maxrennexcarnate March 13, 2010