The indefinable gooey mess mess that sometimes appears on the front of your car - usually road kill, kangeroos, dingos, badgers, really really big insects etc but occassionally remenants might contain a tiny gloved hand, dog collar or leg iron..
"Step to the front of the vehicle please, could you explain this fender food please, Sir?"
"Er.. a dog?"
"Wearing a wristwatch?"
"Haha er.. god made me do it!"