Mortereve is a combination of "MORning, afTERnoon, and EVEning," used as a greeting in international/ multi-time-zone contexts (such as an Internet forum or conference call).
First used on www.narniaweb.com c. 2006.
I logged onto the forum and wished my friends from New Zealand , the UK, and the US a Good Mortereve.
After forty plus years of golfing, Ron finally got a hole-in-one the other morning. He was the happiest I've ever seen him. That is, until he went to retrieve his ball and found some miscreant had left a Moiner the night before.