To murder someone who hurt you or your loved ones by means of stabbing, gorging, decapitation, etc, with their own shovel.
Then the dig a whole with the shovel and bury them with the shovel
Typical of African American male youths. To have one's mouth open, bottom lip hanging low and having the appearance of being completely stoned, or possessing an unusually low IQ. If the thug lowers his head forward while walking, he would "shovel" the dirt with their lower lip.
Quatravion sure is stupid. He walks around with that shovel lip dragging the ground. He's too dumb to close his mouth.
Description of a person who's so lazy, they can't even be arsed to carry a shovel. Instead choosing to drag it along behind themselves, as they saunter along at a snails pace, attempting lack lustre conversation with anyone they happen across.
Look at that shovel-dagger. Bloody lazy shovel-dagger.
Old Jim? Yeah, he's a shovel-dragger.