Just after Christmas 2009 19 members of Weight Watchers in Växjö, Sweden lined up for their weigh in when they heard a bang as the floor came away from the walls of their meeting room.
“We suddenly heard a huge thud – we almost thought it was an earthquake and everything flew up in the air. The floor collapsed in one corner of the room and along the walls” one of those present told the Smålandsposten newspaper.
As the Weight Watchers abandoned the room so other parts of the floor started to give way. Undaunted as no-one was injured, the club member continued their weigh-in in the hallway.