An old trucking term for a truck running at peak performance. If a truck is pulling like Jack the bear he is going at or above the speed limit where other trucks can't keep up.
Guy 1: "Did you see that truck flying by up the pass?"
Guy 2: "Yeah that truck pulls like Jack the bear, I wonder what he's got under the hood of that rig!"
Guy 2: "Yeah that truck pulls like Jack the bear, I wonder what he's got under the hood of that rig!"
by Trucker Jake August 19, 2022
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