something that is meant to hurt others but usually just fucks over someone innocent. Derived from the popular game Mario Cart
by Billy Bragg April 26, 2006
 Get the green shellmug.
Get the green shellmug. by Γαπδθμ Λφπ Δдялειг April 3, 2021
 Get the Green Shell Taximug.
Get the Green Shell Taximug. 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 7, 2017
 Get the Green Shellmug.
Get the Green Shellmug.