"Chip Off the Ol' Block" is an episode of the Happy Tree Friends Flash cartoon series.
HTF's Episode Description
Ah, the smell of fresh cut grass... and blood and guts. When your parents tell you not to stick your hands in the machinery, you better listen! Oh, and don't play with fire either. It's really, really dangerous!
While Pop relaxes in a hammock near a pile of freshly raked leaves, Cub mows the lawn. One of the blades of the lawn mower hits a brick, however, and prevents Cub from continuing his task. He bends down and tries to remove the brick while the lawnmower is still running, but luckily Pop sees this and rescues Cub before anything bad happens. Pop places Cub on the hammock, removes the brick from the lawn mower, and proceeds to mow the lawn himself.
Pop eventually comes upon broken glass and syringe needles in the yard, which he unknowingly runs over with the lawn mower. The debris that flies out from under the lawn mower cuts into Cub's skull, killing him and knocking his body off of the hammock. Pop then walks up, raking a few loose leaves into the nearby pile. He lights his pipe and throws the lit match into the pile of leaves, setting it ablaze. A gust of wind reveals that Cub's body lay hidden beneath the pile.
"Plant kindness and gather Love!"
- Cub has his head sliced apart by various debris shot out from under Pop's lawn mower.