Shou ma7allo/a men el 2e3rab litterally means: "what's his/her grammatical function?" This question is used to ask who a person is or what kind of relationship a person has with another one.
Example:
- I saw you this morning walking on the street with a guy. - Yes, that was Fadi. - Aha, w chou ma7allo men el 2e3rab? - Euh.... it's a friend I met at school.
"Enta Wad3ak Xenon - إنت وضعك زنون": Jordanian Slang, literally means "Your situation is Xenon (i.e. Xenon lights)", metaphorically, it means "You are great, or a great person / you're the man".