The ONLY way I think you could get away with this (and I'm not condoning for you to lie about your situation, but just sharing information) is if you were a dependent child multi-boxing from your parents' accounts. That's the only time where account sharing is acceptable.

It would be a tricky situation to prove, as Blizzard tends to "ban first, ask later" and their only communication line post-ban is the account administation e-mail address. The typical process of getting a legal account un-banned (I like to hang out on the customer service forums) is a lengthy fax of a multitude of legal personal identification, and it may take weeks or months to get your accounts back.