I doubt you or ed are gonna be "offended". Confused maybe, and unsure whether or not to call the police, but not offended.
But besides that, yeah kids, Mister Lynk Fomer is absolutely right. It is not cool to stay away from your job because you were on a party, even if it's your 30th birthday! I haven't done it before, and did not do it again and don't plan on doing it again.