something that is meant to hurt others but usually just fucks over someone innocent. Derived from the popular game Mario Cart
Blake, drop your sack and stop shooting those fucking green shells. You're tripping.
by Billy Bragg April 9, 2006
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Performing a dutch oven, but while under an electric blanket.
Casey totally green shelled that guy she brought over the other night, so now he won't text her back.
by DrPepper09 January 8, 2017
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