These are the tales of a certain couple who climbed a mountain... a college student who moved into a certain apartment building... and  a certain pair of siblings...
I don't know... I don't know! 
What happened to me?
لا أدري... لا أدري! ماذا حدث لي؟
Ich weiß es nicht …
Ich weiß es wirklich nicht!
¡No sé! ¡No lo sé!
¡No sé! ¡No lo sé!
Je sais pas… J’en sais rien…
Eu não sei... Não sei mesmo...