laughed my head off, laughed really hard, set off, left
Me partí de risa cuando me contaron el chiste.
I burst out laughing when they told me the joke.
Me partí el culo cuando me contaron el chiste.
I laughed my ass off when they told me the joke.
La historia era tan graciosa que me partí de risa.
The story was so funny that I burst out laughing.
Partí a la montaña para olvidarme de mi rutina y sentirme liberado al fin.
I went to the mountains to forget about my routine and finally feel free.