Suomitar, feel free to introduce yourself in the new comers section :).
“yallah 7el wednik” --> Literally: Come on, open your ears. Meaning: Come on, listen!
“awla blach” = Or no need to.
“bzoujkoum” = Both of you.
“ykemmel” = He finishes/ completes.
“rak chemmechti b had la karnï” --> Not sure what is meant by karni here. The rest is: You did stay under the sun with this karni.
I guess it means: You kept the notebook with you for too long. Just a random guess though. If you have a context to provide, let us know.
“llah yesle7, lebniyya dyal l-khet yak” = May God protect her. She is your niece (daughter of your sister), right?
We Moroccans are full of humor ;). So yeah, I’d call a buddy bba Ali for example, just for fun. It’s not like calling an old man uncle out of respect. It’s just a joke. Strangely, you never call a girl mmi Samira for example. Bba Ali is more common.