No, random people tend not to ask me questions and that's good because with the kinds of things I'm into, there'd be no end of 'splaining. :)
Regarding the load of questions question, have you ever had a college final that was just one question but with 10 parts? Whether I would consider a bunch of questions to be one multi-part question or multiple questions would depend on whether the questions are connected somehow but there's no hard and fast rule.
Yes, asking for an explanation would count as a question if we were playing 20 Questions. Otherwise, would it matter?