Usually, for me, my response is followed by the question "How much money do you make?". And then I act really offended. End of conversation.
But, for the few who do ask me "what kind of sites?", I just tell them "Ever been to a funny video or picture site? Well, those kind of sites.". And they go "ohhh...". Hahaha
Honestly, it's impossible to explain this business to people who really have no clue how the internet works. :rasta: