When it comes to expressing a sudden and forceful impact, "hitting like ton bricks" is a tried-and-true comparison. However, there are plenty of synonyms to choose from when describing a jarring blow. Phrases like "hitting like a sledgehammer," "hitting like a freight train," and "hitting like a battering ram" all convey a sense of forceful impact. Other options might include "hitting like a tidal wave," "hitting like a thunderbolt," or "hitting like a wrecking ball." Regardless of the specific comparison used, each of these phrases effectively conveys the power and suddenness of a jarring impact.