humanberry jam 

The consequence of a really, really bad vehicle accident, in which the occupant(s) of the vehicle(s) are converted to a substance resembling jam, which is then distributed over a considerable area.

"There was a crash on the southbound side of the expressway, some poor guy on a bike ended up as humanberry jam spread acoss three lanes....."

humanberry jam by eighthofseven December 27, 2007