I was in a bar in the US once, when some loud mouthed woman slopped her glass of wine on the floor, then slipped on her own wine. Immediately she started whining about the floor being in a danferous state and how she was "gonna sue the ar$e off this goddam place". The group I was with called over the manager and said that we'd all seen the clumsy woman spill her own drink before she slipped and that we'd be happy to act as witnesses...in a loud enough voice for the stupid tart to hear. The manager thanked us - and gave us a free round!
Only in America......