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1.
The nickname for baseball's ugliest pitcher, Aaron Harang.
That damn Harangutan threw his feces over 90 miles per hour!
by Aaron Harangutan April 05, 2010
 
2.
to constantly be on someone's back; incessantly nagging and lecturing.
"I can't stand to be in the same room with him, he's such a harangutan!"
by Donda & Sandi November 20, 2007