Two police officers, responding to a domestic disturbance with shots fired, arrived on the scene and, after discovering the wife had shot her husband for walking across her freshly mopped floor, they called their sergeant.         
Hello, Sarge?
Yes.
It looks like we have a homicide here. 
What happened?
A woman has shot her husband for stepping on the floor she has just mopped.
Have you placed her under arrest?
No sir,.......

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the floor is still wet.