Meaning: This sentence describes an action where the speaker laughed uncontrollably to the point of shedding tears.
Choice of Words: The word "I" is used to refer to the speaker. "Laughed" is the past tense of the verb "laugh", which means to make sounds and movements of the face expressing amusement or joy. "Until" means up to the time that. "Cried" is the past tense of the verb "cry", which means to shed tears.