2 definitions by O'Brien

Top Definition
One who drinks more than they can handle. usually followed by outrageous behaviour and projectal vomiting for the entire night.
Dude, your a mag.
wow, what a mag.
stop magging out you mag.
why did you drink so much you mag?
by O'Brien July 30, 2003
an Irish person or someone of irish decent.
Mikes's dad is know as frosted lucky charms because he comes from Ireland.
by O'brien September 15, 2005

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