|1.||Dragging a dead body through the mud|
When after shitting, the power of the flush leaves many shit trails across the bottom off the bog in the direction of the U-Bend, resembling the trail left in the mud after dragging a body (possibly in a bag) across a muddy field
Nick: I think my detective wife may have solved the bathroom "whodunnit"
James: Really, what evidence did she use to solve such a henious crime?
Nick: Someone left mark's where they had been "Dragging a dead body through the mud"