how can we reply such question??

There are two meanings that I know of here in the stats for boobs or boob. One of them is if someone calls you a boob they are basically calling you a dummy or an idiot. The second one is the more common one. When guys or girls say look at her boobs or if someone says what is your boob size they are talking about your breat. If you need to explain to her. Just say wanna know what boobs are ore mean and then point att yours and say in the US they call these boobs. lol

tell me one thing...how much of arabic do u know or have learned in the last 8-9 yrs?? i am sure the first things u learn in a language is something thats NOT MEANT TO BE LEARNED!!! u really think that she is too dumb or doesnt know english enuf to understand 'boobs'..(i really doubt that buddy). how many times has she come over to you asking for a specific meaning..if its too often before this then i may think..'ok its her innocence to ask such a question to a guy' or else (u know where i'm getting to now ;) she is advancing towards u!!! hahaha i dont think you should be too shy to answer that now!!! psst...dont let your wifey read this --- hahahaha

simply say these lines. boobs are the mammary glands. infants drink milk from these from their mothers. i think that should be enough to increase her general knowledge.