Se Accidental
The se accidental is used in sentences where the action is not intended, rather it is accidental. With the se accidental the subject has no intention to perform the action, but it happens accidentally and the subject receives the consequences. The se accidental is usually followed by an indirect object pronoun that shows the person or object that is affected by the action.Se me cayó un jarrón.
I dropped a vase.
Estaba tan nerviosa que se le derramó el café en la camisa blanca.
She was so nervous that she spilled her coffee on her white shirt.