Can I have some Palestinian Arabic insults and their meanings?

Like, "Je suis une enfant du monde" in Indila's song. Enfant is masculine, so shouldn't it be un? Or ami/e. I thought that a noun is always either masc. or fem. Why does it change ...

I use to be fully bilingual in Spanish but haven't used it in a few years now. I've definitely lost touch with it a considerable amount however most of it is still there, like tip ...