To uncontrollably crap your brains out.
Mike got so high, he pulled a Sloppy Grandma on his mom's couch.
by Anonymous May 29, 2003
In beer pong, when you get a rerack, a sloppy grandma is simply a sideways triangle (using only 3 cups).
Hook us up with a sloppy grandma bro.
by big jur December 05, 2008
n. someone who always has to run to the restroom; or someone who uses your restroom and then proceeds to crap uncontrollably all over the floors, tub, sink, hand towels, etc.
Sloppy G's are gross...i should know
by sean July 15, 2001

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