A sound that is made when a rather large person bends over to pick something up or otherwise makes a move that elicits a groan like sound. Usually this sound is something like "ugghhhhh."
As Peter bent over to pick up some chalk on the floor, a fattie grunt escaped his lips.
by Civixx July 31, 2010
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The grunting noise a fat guy makes when he is either getting out of a chair or bending over to pick something up. The grunt is mostly along the lines of a "hyurk!"
Harvey bent over to pick up the donut and let out a very loud fatty grunt.
by Toxic Orphan April 18, 2005
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