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1 definition by lil mac10

A gang from the West Michigan area that consists of people of full or at least half irish decent. You can pick them out by the green and white or any clovers on their clothing. Their sign is like the westcoast sign except they use both hands and put the middle and ring finger on both hands together. This makes a four leaf clover.
those guys walkin down the street is irish units.
by lil mac10 December 11, 2007