Another strong earthquake. Another chance to play Christchurch's favourite new guessing game.
In thousands of homes and workplaces across quake-battered Christchurch, people initially brace themselves for a few seconds as the quake rumbles through.
"Whoa, it's a biggie," comes the cry in my office. The quake that strikes at 2.44pm yesterday is the strongest since January.
Once the powerful rolling motion subsides, the call is "how big?" and the picks begin to fly.
It's got to be bigger than a magnitude 5 is the quick consensus among the folk in the office. One of the more experienced workers picks 5.2. A few minutes later, as people in mass tap into the quake reporting websites, he's proven exactly right.