Sorry, I didn't realise it was an offensive term, I thought it's short for Mickey or something.
Unfortunately all our Irish friends took offence and stopped us telling jokes a few years ago about an English, Scotchmam Irishman or Paddy and Mick Jokes for some reason as they found them offensive rather than funny, the Politicaly Correct police got hold of things and now we can't tell them anymore which is such a shame because they were such fun and traditional here but never mind...