Hi! After reading another thread, I wonder (1) what exactly is the difference between ocurrir and ocurrirse? (2) Must there always be an object between se & ocurrir? Like: Se me ocurrió (3) Can't you just say: Me ocurrió ? (4) How do you say: "What were you thinking!?", like in disbelief? Would "Qué te ocurrió!?" be okay? Or "Qué se te ocurrió!?" ? Sorry for throwing so many questions. The moderators may split them if they think it's necessary. Gracias!