mickey(n = noun.person) mick, paddy - (ethnic slur) offensive term for a person of Irish descent;
is a kind of irishman

   a person of Irish descent; -- an ethnic slur, offensive and disparaging. [WordNet 1.5]

mickey, n. (also micky)

Idiom:
take the mickey (often foll. by out of) sl. tease, mock, ridicule.

Etymology:
20th c.: orig. uncert.

mickey charles mantle, mickey finn, mickey mantle, mickey mouse, mickey spillane