The phrase "hit like ton bricks" can be modified with various synonyms to convey a similar impact. Words like "wallop," "smack," "slam," "punch," and "whack" all have a forceful connotation. Additionally, phrases like "knocked me off my feet," "bowled me over," and "rocked my world" can be used to describe something that hits with a sudden and heavy impact. These synonyms can be used in a variety of contexts, from describing physical blows to emotional or intellectual impacts. Regardless of the specific phrasing, they all communicate a powerful and memorable experience.