Lebanese Slang, literally means "You are part of my neck's bones", metaphorically means "you are a dear close friend, so don't mention it".

Sample conversation:

Student 1: "I hope I will pass the test because my dad would crucify me alive if I don't graduate this semester"

Student 2: "man Hatt Ejrek bi May Berdeh, I gave you the right answers!"

Student 1: "Thanks ya zalameh... if you did not help, I would have been in deep trouble"

Student 2: "Walaw... Enta Men 3dam El Ra2beh"