The phrase "died over" is often used to describe something that has caused someone to laugh extremely hard. It can also be used to describe a situation where someone has become so overwhelmed with emotion that they collapse or faint. There are a number of synonyms for this phrase that are commonly used in everyday conversation. These include "died laughing," "burst out laughing," "cracked up," "rolled on the floor laughing," "splitting their sides," "laughing their head off," and "doubled over in laughter." All of these phrases are effective in conveying the extreme nature of the laughter or emotion that is being experienced.