Instead of "intruding" in someone's space, one "inturds" in someone's space by making an ass of himself/herself in the process.
Having not agreeing to his wife asking for a divorce, he inturded into his wife's papers and personal affects.

Or (thanks to my colleague):

There once was a man named McBride,
Who fell in an outhouse and died,,
And he had a brother
Who fell in another,
And now they're inturd side-by-side
by dvanrijn March 17, 2010
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Someone that breaks into your house to do a poo.

Usually performed by a desperate friend, or someone lacking the common sense and social etiquette to find a public restroom.
Man, I came home and my front door wasn't locked like I left it. Nothing was stolen but there was this big shite floating in my toilet. I hate it when inturders don't flush. I don't think they wiped either. Dirty, dirty inturder!
by Migaloo September 16, 2010
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Interns you do not like; Most interns; Interns that think they know more than you
Dear Christ! Can you get that inturd to empty my recycle bin.
by tater_anne February 17, 2010
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