The term 'HULKS PUMP IT' can be solved by the four-letter word 'IRON'. IRON is a chemical element with the symbol Fe and atomic number 26. It is a metal that is abundant in the Earth's crust and is one of the most common elements on the planet. IRON is used to make steel, which is used in construction, manufacturing, and other industries. IRON is also an essential mineral for human health, as it helps to transport oxygen in the blood.