Not me, but the insurance agency I worked for. We got this strange claim about children that were hurt in a frontal collision while the parents filed no claim for themselves. The collision was against a wall.
A few things in their account of the accident didn't check out so the comp agent tasked an investigator.
Investigator found out the parents sat their two children in the backseat with fastened seatbelts, then put a rock on the accelerator pedal to crash the car in the wall and get compensated for their children's injuries. Needless to say, while we did pay for the children's care, parents got no penny and ended having to deal with CPS.