The act of inserting a finger or thumb into an unsuspecting victims anus through their fresh new underwear, thus causing a permanent poo stain. If done in a forceful manner, blood stains may accompany the poo stains.
by Mutato January 30, 2008
Get the undie grundie mug.by anonymous May 24, 2021
Get the Grundgle mug.by billy lincoln and nate (jew) February 19, 2005
Get the grundies mug.(Auatralian) shortened form of government regulation undies, refering to plain or uncomfortable underwear.
by feuxfelix April 25, 2009
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Get the Grundge mug.Really gross underwear, usually worn by fat, middle-aged men.
i.e. y-fronts and a stained vest are grundies.
i.e. y-fronts and a stained vest are grundies.
by Rileyrileyriley May 6, 2009
Get the Grundies mug.Sick enough that you feel miserable but not so bad that you can stay home from work or avoid other obligations.
This was someone's name but it sounded to me like it fit the new definition I gave it. It has nothing to do with that person in particular.
This was someone's name but it sounded to me like it fit the new definition I gave it. It has nothing to do with that person in particular.
by Uncle Rich January 2, 2012
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