Bad, bad Noel Dempsey and the realpolitik of third-level fees
Omigod, depending on volume, stridency and accompanying gestures, can refer disapprovingly to anything from a bad smell to a comparable individual, or approvingly to anything from a new pair of shoes to a successful job application. Trust me: if you don't know the safe response to a piece of news, going "Omigod" will cover you.
The newest kid on the Omigod block is "Shut up!" It signifies delight, approbation and a desire to be told more. If a young woman announces her engagement, friends who are delighted by the news will holler "Shut up!"