Chip Off The Ol' Block (Crossover Version)

While Lisa Simpson relaxes in a hammock near a pile of freshly raked leaves, Maggie Simpson mows the lawn. One of the blades of the lawn mower hits a brick, however, and prevents Maggie from continuing her task. She bends down and tries to remove the brick while the lawnmower is still running, but luckily Lisa sees this and rescues Maggie before anything bad happens. Lisa places Maggie on the hammock, removes the brick from the lawn mower, and proceeds to mow the lawn herself.

Lisa eventually comes upon broken glass and syringe needles in the yard, which she unknowingly runs over with the lawn mower. The debris that flies out from under the lawn mower cuts into Maggie's skull, killing her and knocking her body off of the hammock. Lisa then walks up, raking a few loose leaves into the nearby pile. She lights her pipe and throws the lit match into the pile of leaves, setting it ablaze. A gust of wind reveals that Maggie's body lay hidden beneath the pile.