split (someone's) sides

Translations
смеяться до упаду
The comedian's jokes were so funny that we split our sides laughing.
Шутки комика были настолько смешными, что мы смеялись до упаду.
Definitions
To cause someone to laugh uncontrollably or to the point of physical discomfort, often due to something very funny or amusing.
Words
split

verb
рассмешить
someone

pronoun
кого то
s

article or possessive pronoun
его
sides

noun
бока