One who, without consciousness of doing so, holds a spoon or fork in their hand in a manner that resembles holding a bike handle, and proceeds to shovel the food into their face as if they were a caveman.
Nothing aggravates me more than seeing a shoveler in a nice restaurant.
The person in a group of friends - typically when the group is eating pizza or any similar food - who decides to reach for the dipping sauce with the slice, and in turn pulls the dip entirely out of your ability to reach for it.
Joey: "Jordan, if I'm already completely wasted, why the hell would you shovel the garlic dip out of my range of reach?!"
Jordan: "Damn son, sorry for being a shoveler."