A Swedish Weight Watchers group got a sign they might want to lay off the meatballs, according to a local report Thursday.

When a group of 20 members gathered in Vaxjo, south central Sweden for their regular weigh-in, the floor collapsed, the Smalandsposten newspaper reported.

"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," a member told the paper, according to a translation on Swedish news Web site "The Local."

The smell of sewage quickly collected in the collapsed room. Luckily there was never any danger because the floor was only slightly above ground level, the newspaper said.

No injuries were reported.