Punstructions are 3-dimensional objects that combine elements to create a visual pun. For years I have made them from model kit parts, toys, etc., and now I use Legos!
The Monster Truck, therefore, is a monster that’s also a truck, or a truck that’s also a monster. It’s something you wouldn’t want to encounter either in the woods or on the highway. Instead of crushing vehicles by rolling over them, it crushes them with its mighty jaws.
If this became an official Lego set, it could start a whole Punstructions line and create Pundemonium.